Gosh, thank you incredibly. My 7525 died, bought a 'working' one (used) for $20. 'New' one printed, but wouldn't scan. Used your video to remove the scanner section from old printer and put on 'new' one, now everything works!
Great video! Followed it to replace my printer's touchscreen but accidentally damaged it and had to dispose of it. No regrets though; your guide was clear and made the attempt worthwhile. Thanks for the informative and fun experience!
16:55 I would like to thank you very much on how to disassemble the sliding paper adjustment, it came off few years ago and not sure how to put it back! Now with this video, it really helps and managed to put it back! Thank you once again!
my 7520 was bricked on a "There is a problem with the printer or ink system" error, used your video as a guide to get to the CMOS battery for a master reset, and now its working again!
Thank you a thousand times. Using your instructions I was able to disassemble the printer to access the logic board to re-solder the pins of the power connector. The printer now works again. I would never have been able to do this without your help.
My 7520 says it has a Printhead issue... Ive Swapped out the PH bug it still shows PH error. How do you “Reset” the error message after doing this repair? Or are the contacts behind the PH bad??
Hi I have a problem with paper feeding .... the first time I hooked up the printer I saw a green substance on the paper then the printer stop feeding paper unless I push up the paper.... in the last part of the video on the base piece of the printer it have a lil green strip I believe in my printer that was showing up on the paper .... my printer was packed away for 2 years b4 I even opened it .... any advice on how to make it feed the paper without me pushing paper forward 1 by 1 .
Merci Thank you. Help me to fix my printer. I follow the step by step from your instructions and I was able to disassemble the entiere printer. thank you again to help us
As I'm about to toss my HP 7525 I happen upon your video... and BOOM!!! back in business. What's even better, the 7525 I picked up for parts is now my back up parts warehouse. Thanks. Great work.
First off thanks very much for posting your video. It gave me the courage to tackle a problem that I thought would be a fairly simple fix ( a broken hinge on my HP7520 printer). I admit to being mechanically challenged but was successful in removing the broken hinge following your helpful video however.....NOT so successful in reassembly and have more than likely trashed my printer. The issues I encountered on reassembly were. (1). The L shaped plastic piece that fell out when I lifted the lid after releasing the hinges from the lid....I see this piece in your video when you lifted the lid....I cannot determine where it fits or attaches and you did not mention it in your video. (2) After replacing the broken hinge I was experiencing difficulty in reattaching the lid because of the cable connections....was hopng that I would not have to detach the cables from the circuit board as you did in your video. But alas I determined that was the only way to get the lid back on .... so despite your comment to be careful in removing the cables I inadvertently pulled the "base" of the cable from the circuit board thereby trashing the circuit board. Thanks again for your video!
If anyone is having trouble reconnecting the wide blue ribbon to the back of the touchscreen, it is a bit more complicated than expected. If you look at the back of the touchscreen, where the wide ribbon connects, there is a grey, rectangular rolling lockbar. This bar has 2 positions: lock and unlock. It will probably still be in the "locked" position. In this position, you can see a row of little slots along its long edge. It will look like it's tilted backwards. You can't insert the ribbon if this bar is locked. It must be rolled forwards with your finger to unlock it. It will click into place. Instead of looking tilted, it will look squared. You won't be able to see the row of slots if it is unlocked. Roll it back and forth... lock it by pressing it back, unlock by pulling it forward. Make sure it's in the unlocked position (no slots visible) and slide in the ribbon. It will likely stay in, but loosely. Then press the lock bar (roll it backwards) to lock the ribbon into place. I hope this helps somebody!
Thank you very much for sharing. I'm sorry I didn't point that out and caused you some unnecessary trouble. I hope this helps someone. Have a great weekend!
15:28 you show the underside of the print head assembly and the ink feed tubing. on the tubing is there 2 return tubes that just sit in the 'soak' padding or do they actually connect to something ?
15:33 I can see the 'three' pair tube that runs to the head? but I can't see where the other 2 singular tubes are positioned. When disconnecting the right front facing side of the carriage, mine didn't come up as easy as yours. so I worked it until it just fell loose, (on yours there is a screw holding them to the bottom of the assembly with a white 'mount hold' but you just ripped yours out. I'm needing to clean the "ink" buildup all in the carrage and reassemble to hopefully fix for a client.
@@Network_Pat Hi, I am trying to establish which of the 5 tubes connect to the 3 ports of the mount hold at the bottom of the tray and in what order. And if the other 2 tubes are just positioned in the sponges or soak padding. Can you help? Did you get a solution to your question? Many thanks, Thanasis
Great video. Didn't solve my issue on my 7520. And yes that's a very good printer, but instead of having 5 ink cartridges, this familly of printer should have had reservoirs (ink tanks) like the newer Epsons and Canon printers. And not only that, the manufacturer should include in the life of the printer "X" amount of print heads and an easy way to clean ink charging section and replacing the felt, and a way to replace the 3v CR2032 battery if it needs to be replace. So if HP decides to make a tank version of this printer, they should implement my ideas and they would sell a lot of them.
Great video!! It helped me get the control menu off so I could get the cover over the glass pulled back to clean the underneath. Couldn't get the lid off from the glass holder. The 2 outer hinges came loose but the center hinge piece wouldn't come out. I'd love a hint how to get that out or point me to another video that does that. Thanks!!
Hello 303 Electronics. Thanks very much for your video. Yesterday I dismantled my HP 7520 with no problem at all. However, when I came to remove the printer unit, with all screws removed, the right hand side would not release, but there seemed to be nothing holding it. I had noticed that when you were finally removing this unit it did seem to be reluctant to come away. So I gave it a bit more of a pull and it released, but was bringing some sponges with it. I did not want that to happen as they were soaked in thick black ink, as was everything else in that area, I just pushed them aside. I then found I could not remove it completely as it was still held in place by 3 pipes on a bracket mounted to the base, I release the bracket. On removal of the print unit I found that there were 5 free floating pipes, where 3 of these had obviously pulled of one side of the bracket, whilst the other 2 I can only assume were open-ended and placed among the sponges on the baseplate. The dilemma now is which out of the 5 pipes were connected to the bracket and in what order, and where were the other 2 placed with respect to the sponges. I would be grateful if you were able to shed any light on this dilemma as to where these pipes connect. I have a photo of it that I have marked up the pipes and the bracket. This could sent to you if it would help. So far I have washed out all the sponges and the baseplate. I do intend to clean all the old ink from the black parts on that side of the print unit. As there are no electrical connections to worry about I may well just wash it through with running water. Best regards, Dave.
Hi David, did you eventually get to the solution of the tubes and where they connect? I had the same problem, but also the sponges do not correspond to the tray structure so I am not sure where to put them back again after cleaning them.
My father had bought one of these back in 2011. It sat in storage for the past 6 years when I re-discovered it and got my hands on it. I can't for the life of me get it to print even with new carts and a head. It'll either print yellow only, or dump out an empty page. Once I got it to smear a streak of black across the paper, but haven't been able to convince it to do it again. This is what I needed. Hoping tearing it apart and putting it back together will jostle the life back into it. Failing that I'm just gonna E-waste it and get a Brother printer.
Followed your video to replace paper door from one 7520 to another 7520. WiFi now doesn’t work & wonder if my hitting the memory card/usb port on left side of printer may have damaged WiFi module/board? Thanks.
🤔hmm, that process shouldn't interfere with wifi card. The cover in the left is just card port. Make sure that is connected properly, maybe that's the case. Wireless card is attached to main board. See if it got dislodged.
I have the 7520 and it wasn't feeding the paper. Then recently it disconnected from WiFi and I can't get it to reconnect. So I watched your video and took mine apart, cleaned it, and put it back together. Plugged it back in and it won't turn on.
Hi, I am having problems with my HP 7520. The printer display shows "paper size error". I have already check in my mac and the paper sizer is correct. I have also printed a status report directly from the printer menu and the error keeps there. When I hit OK in the paper size error msg, the printer starts printing but the second half of the paper jam. Can you help me? Thanks
Thank you for the video. Do you happen to have instructions on how I can slide that broken gear on the roller so I can replace it? I have tried gluing around it before but it always wears down and breaks again and stops feeding the paper. I followed everything till the end of the video except removing the printhead encasing. Thank you!
Hi. I usually turn off printer from the plug when the ink cartridge carrier is in the middle. If you wantvto manually spin it, there is a mechanism that slides back and forth under the carriage. Push it back gently and that will unlock the carrier.
Thanks for the video and great directions. I have been getting a "problem with red cartridge" message that prevents any operation. I put in a new HP red and it resolved the issue shortly but then it returned--on and off. I cleaned the print head and all the connections to each cartridge and behind the print head contacts-both sides. I was jiggling the print head ribbon cable one day and that seemed to get it going sometimes. I took it all apart today (thanks to your encouragement) and cleaned all ribbon cable connections and sockets to no avail. I replaced the battery. Could I have a broken wire in the ribbon cables from the print head to the main circuit board? Bad connection from printer head to the small print head circuit board the 2 little ribbon cables connect to? Bad solder on that small printer head board? I ordered 3 Brother printers a month ago and there are none to be had due to shipping crisis. I would like to get this 7520 going but am out of ideas. Seems parts are crazy expensive. Any ideas as to what I can check??? I tried slipping a blue HP cartridge in the red slot and is says damaged or missing red. It isn't sensing the red cartridge is good and in place. I see one guy re-soldered some bad power connector contacts so solder may be an issue but I have power and when it decides to work it works great. Something intermittent is the problem and it is now to the point it doesn't work ever. I hate to spend money on another red cartridge. I really appreciate your videos and advice. Any suggestions would be greatly appreciated.
Have cleaned the printhead, pins and contacts, still comes out blank, any ideas as to where to look further to solve this problem. The printer is an HP Photosmart All-In-One 7520
My pick up gears don't engage with the back gears in the gear box on a 7520. How do I get to the gear box without having to take the complete printer apart? Can I just take the bottom off to access? I used a mirror to view the action and the back three gears did not engage. Please advise.
my pick up roller assembly is busted. Can I quickly access it just by removing the bottom only? I don't want to have to disassemble the entire printer.
That video was amazing! I have the 7515 so you know it's old. I've having black ink smudges occurring on my cards and envelopes. Looking inside at the right of the ink cartridges where the printhead rests when not in use, I can see lots of blank ink buildup. Wondering if there is an easier way to clean this area without disassembling the whole unit as you did. I have been looking for a printer replacement, but HP simply does not make printers like these old ones anymore. Any recommendations?
Hi. Yes. Cleaning inside the printer does not require disassembly. I used butter knife or screwdriver. Be careful not to break anything. You can also remove printhead and clean it.
@@303electronics I have a few questions on this printer if you have time to give some advice. I noticed inside the printer, where the ink head rests, all the way to the right, there seems to be a plastic container. I think it is to catch any access ink, and it has a mesh piece. Is this where the printer head cleans itself?
@@ninja226 Hi. The pads absorb excess ink, yes. The printhead is cleaned with rubber squeegee that slides back and forth under the printhead rest. The printhead cycle purges ink through printhead and then wipes it off with squeegee. It is best to clean printhead manually to avoid losing lots of ink.
I don't see where you took the photo tray apart. Mine is apart, as I pulled it out while it was engaged, and I can't figure out how to get it back together.
There is a gear that causes the paper to be fed. After years of use it tends to break free from the shaft and needs to be reglued. How much of the printer needs to be disassembled so that the gear can be exposed and easily glued onto the shaft?
It would be soooo helpful if in your “printer repair and mantenamce” playlist, you make a playlist for HP, another playlist for Cannon and another for Epson, etc. And even better would be to clump together like printers, ie. All HP Photosmart. Maybe alphabetize groups in one manufacturer’s playlist. 189 videos is a lot to sort through when you need help.
I keep getting "One or more cartridges appear to be missing or damaged." I replace the cartridge(s) with new and will get the same message - sometimes the same cartridges, sometime a different one. It is not the cartridge. Already replaced the print head. Ideas?
Hello! I watched your vid and was able to fix the paper roller/gear issue. Unfortunately, now I'm receiving printhead error. I have taken this apart a few times and am sure I have all cables/screws/whatnots all back in the correct place. Any insight into what could be causing this?
Great Video, I have had this printer for 8 years and am now starting to get printer errors, which I don't know what they mean. If I keep hitting OK on the Print screen, it will eventually print but makes a lot of noise. Don't know what to replace it with. Thanks
If you really like this printer, you can get a replacement on ebay or local ads. You will find that HP Photosmart 7510, 7515, 7520, and 7525 are all similar. Save your ink and printhead since sometimes when ou get a used printer, those are needed. Easy to swap out.
Hi 303 Electronics - Thank you for posting this video. I managed to follow your video step-by-step and was able to dissemble and re-glue my broken gear that moves the ADF for general paper printing. One of the mishaps that I found was ensuring that the printer assembly was aligned properly so that the duplex part is able to enter, so I had to dissemble and reassemble again. The printer is working mechanically, but the control panel is no longer responsive or lights up. Also, my power button and wifi light no longer work. I'm able to print documents via the cloud, just need to disconnect the cable to shut it off. Do you have any suggestions on how to remedy this? I've checked the cabling several times and everything is connected in it's proper place. Thanks again for your help.
@@garthmicro It's been about 2 years, but from what I can remember I dissembled all of it. On the video it's around 15 minutes in. Good luck to you. I ended up purchasing another printer since it was hard to manage the ink levels and changes to my WiFi. Becareful not to damage the wires to the circuit boards!
Hi thank U 4 your suggestions. I have another issue: there are two little tubes on the bottom of the black plastic part, close to other three longo tubes. those short little tubes are fixed on on side but apparently free, without any other connection on the ending side. Is it correct? should the ending part be free with no connection? thank for your kind replay. A.
Need to open my photosmart 5720 because the rollers that feed the paper from the tray wont spin. Its a good printer and I have printed over 5k copies without any problem.
Have the same problem. I looked with a flashlight and a small mirror and I can see one of the plastic gears has stripped from the metal rod that drives it. if you skip to 15:30 his thumb is resting on the rod to the left are the gears that drive the rollers.
Can I remove the scanner assembly and ADF and use them without the printer assembly? I assume I would have to remove the main board from the bottom to make this work.
Do you have, or have a source for the small black plastic gear press-fitted on stainless shaft that drives the paper pickup roller assembly? desperate, need a couple or more.
@@303electronics Hi, I know there has been a bit of time, but I have just watched this video. THANK YOU VERY MUCH. It helped a lot disassembling. I have the issue with this black plastic gear. I glued it twice on the shaft where the serrations are, but it now appears split. So the shaft rotates but the gear not. Do you have any spare ones I can buy or know where I can find them?
Did you skip the disassembly of the scanner assembly? My scanner mechanism has stopped working and I'd like to know how to disassemble the scanner components for replacement.
Hi, awesome video. How do you fix the printhead when it doesn't automatically move to the center when the printer is open. It doesn't slide. The error message for printhead missing keeps coming up... can you help?
First thing to check is to make sure all ink cartridges are down and locked. Squeeze your hand over the printhead and make sure all cartridges are down.. If that is all good,, try this: Open the cover on side of the printer where printhead is. You need to remove 2 or 3 screws to do that and the side pops off like I show in this video. Then spin the gear exposed and the the mechanism that locks the carriage will release the carriage.
Great information and detail... I was able to fix the paper feeder not dropping down! Unfortunately connecting that flexible ribbon back into the screen seems to be a bit harder than taking it apart LOL Do you happen to have a video on how to slide that ffc into the connector?
I can't do it... I am trying to replace the nonfunctional screen, I purchased a new one, but I'm really having trouble getting it back on. Please help? It's really not a "put it together the same way in reverse" kind of thing and now I'm stuck.
@@ladychroe I feel your pain, I didn’t see James offer for almost 3 months after he sent it and I haven’t heard anything either… I’ve searched for any type of info on how this clip works to no avail, I sorta gave up but I’ll try again and see if I can figure it out and hopefully have an answer for you 🧐
Can you please show a tear down of a HP all-in-one 250 mobile printer? When I was trying looking for paper in the unit due to continual paper jam errors and the pick up roller not picking up paper, I accidentally pulled out a board connection. I got as far as taking apart some of the molding and the top lid. I at a loss. This printer is JUST out of warranty and has a high price tag. I don't want to pay for repairs if I don't have to. Thank you!
Does anyone have an idea as to how to repair one of the cartridge contact pins (black cartridge)? The pin is bent and won't spring back to contact the cartridge. There's no way that I'd tackle taking apart the printer.
@@303electronics Hi. Thanks for your reply. We initially bought the printer used. After replacing the black cartridge, we got the not recognized error. I found the same video at that time and was able to lift up the pin. The other day the same thing happened after replacing the cartridge (my wife did). I sent her the video at her store and she's been fiddling with it to no avail. I'll be checking it out in a couple of days, myself, and bringing tweezers as you suggest but I'm afraid that it might be beyond repair. I really appreciate your reply. Len
Thank you for this video, very helpful to enable me to investigate deep inside to try and solve my general printer error of 0x6100004c which in most Google searches talks about the print head, cartridges and paper blockage of which all is fine. So I've wanted to take the lid off to investigate further. Would you have any other advice?
It most likely is not the scanner. When you are printing from the computer, are the pages also blank? If so, the ink cartrudges are dry or printhead is clogged. Also to test if your scanner lamp is working, make a scan to computer or media card. If the scan is successful, then scanner is working properly.
303 Electronics There is no light when scanning. I can print via Bluetooth from my phone and it’s fine. Won’t print from paper feed or regular scan. If it does only bits and pieces from feed. Ink is new.
My 7520 has a deep paper jam, but when I turn it on I get a message "Improper Shutdown" and then the unit turns off and the Power Brick PSU shuts down (no green led). Obviously the paper jam has caused the unit to shut down to protect itself??? Do I just need to take it apart and remove the paper jam and then the message should go away? Thanks for any tips
I have this printer 7520 and it no longer recognizes any of the ink cartridges. I have exhausted hp’s Troubleshooting guide and replaced the ink as well as the head. Any suggestions for saving this printer from the heap?
Hello. Nice video, however I have little bit different problem. I have found a printer, HP7510 in a garbage place, but no external adapter was nearby. There are 3 pins for power on the printer, middle is clearly GND, upper one has crescent, and down nothing. Above are just written two voltages 32/12V. I used ATX 200W power supply as a source of the voltages but have no idea how to connect it. Please if you can look at my small video here and help me if you are so kind. It is only 5 minutes to meassure working power adapter and fwd me the info what voltage is on which pin. @. Thanks in advance. Martin.
My Officejet 7510 will not print black text. Everything else works fine. And I have put in a new ink for the black and did the clean by soaking of the printhead ... It still does not work
There is two black ink cartridges.The one you need for text black is the bigger of all. Try to flush black color like in the video in this link: th-cam.com/video/DFdM9Z6Nnxg/w-d-xo.html
Hi Kaki - I also have this problem. At one point my control panel was white and now it doesn't light up at all. Did you resolve this issue? If so, what did you do to fix it? Thanks
@@jaimevillasenor9221 I tried fixing it but I couldn't return the band to it's original position so I just ended up getting rid of the printer and buying a new one 😔
After putting everything back together my ink carrier is moving really fast and hitting the sides. Then comes up with error code Carriage jam saying the print carriage cannot move. But it’s definitely moving.
The timingvstrip needs to be put back in position. It is a small film in the back of the carrier which is attached from one side to the other. If it is not fed through properly, it will not be able to direct the carrier where to go and it will behave the way your printer is now.
Encoder timing strip was not in the right spot. Fixed it by taking the ink carrier out and lifting the small grey cove to be able to see where it should go.
I am trying to fix my printer the same one taken apart in this video. I am having an issue with mine where it does not roll the paper any longer. I cleaned my printer and followed another trouble shooting video but the issue is the pick up rollers or (the rollers that direct the paper up) I have paper in my tray but it tells me to put paper in the try. Can anyone help me to a video that can show me how I can fix this issue... buying a new printer is not in my budget. Thank you.
Please Please Help!!!!!!, I need to replace the locking lever for the printhead carriage..... Can't find a replacement.... Called HP, they wanted Me to buy a new printer.... Companies so useless
This video is essentially useless for repairing the ADF on top of the machine. There's a little blue power ribbon that attaches next to the hinge on the document feeder. When it comes out, you're done. It isn't going to be reattached... no matter what. End of story. This is an example of a completely ridiculous engineering design. It really makes that repair impossible. If that is actually the purpose, it doesn't motivate me to buy another HP printer... even though the machine is quite durable and lasted a good long time. A complete replacement of the top half of the machine may be possible. But disconnecting the power to that seems to be overlooked too. This video is useful if you only want to take the machine apart, for some reason.
Gosh, thank you incredibly. My 7525 died, bought a 'working' one (used) for $20. 'New' one printed, but wouldn't scan. Used your video to remove the scanner section from old printer and put on 'new' one, now everything works!
Good job! I'm glad you got it fixed. Thank you for the feedback!
Great video! Followed it to replace my printer's touchscreen but accidentally damaged it and had to dispose of it. No regrets though; your guide was clear and made the attempt worthwhile. Thanks for the informative and fun experience!
Thank you for the feedback! It's great that you tried to replace it, I'm sorry it didn't work out. Have a great weekend!
Danke!
16:55 I would like to thank you very much on how to disassemble the sliding paper adjustment, it came off few years ago and not sure how to put it back! Now with this video, it really helps and managed to put it back! Thank you once again!
my 7520 was bricked on a "There is a problem with the printer or ink system" error, used your video as a guide to get to the CMOS battery for a master reset, and now its working again!
I'm glad you got it fixed. Thank you very much for sharing. Have a great day!
Thank you a thousand times. Using your instructions I was able to disassemble the printer to access the logic board to re-solder the pins of the power connector. The printer now works again. I would never have been able to do this without your help.
My 7520 says it has a Printhead issue... Ive Swapped out the PH bug it still shows PH error. How do you “Reset” the error message after doing this repair? Or are the contacts behind the PH bad??
Hi I have a problem with paper feeding .... the first time I hooked up the printer I saw a green substance on the paper then the printer stop feeding paper unless I push up the paper.... in the last part of the video on the base piece of the printer it have a lil green strip I believe in my printer that was showing up on the paper .... my printer was packed away for 2 years b4 I even opened it .... any advice on how to make it feed the paper without me pushing paper forward 1 by 1 .
Wow. My B210 had the same problem! You saved me from buying another $300 printer. Thanks!
Thank you very much for sharing! I'm glad we could help! Have a great day!
Thanks for showing the HP7520 Disassembly method!! It’s very helpful in helping to keep the printer working. Thx!!!
Merci Thank you. Help me to fix my printer. I follow the step by step from your instructions and I was able to disassemble the entiere printer. thank you again to help us
As I'm about to toss my HP 7525 I happen upon your video... and BOOM!!! back in business. What's even better, the 7525 I picked up for parts is now my back up parts warehouse. Thanks. Great work.
Thats awesome. This is a very good printer. I'm glad you took time and was able to fix the printer. Have a great weekend!!!
Excellent video - well done. Very useful. Thank you.
Thank you so much! Have a great day!
Nice video. I've got a 7510 on my bench at the moment with a dead wireless module (no RF). Thanks for showing me how to get to the part :)
Thank you for a job well done.
Thanks for watching!
First off thanks very much for posting your video. It gave me the courage to tackle a problem that I thought would be a fairly simple fix ( a broken hinge on my HP7520 printer). I admit to being mechanically challenged but was successful in removing the broken hinge following your helpful video however.....NOT so successful in reassembly and have more than likely trashed my printer.
The issues I encountered on reassembly were. (1). The L shaped plastic piece that fell out when I lifted the lid after releasing the hinges from the lid....I see this piece in your video when you lifted the lid....I cannot determine where it fits or attaches and you did not mention it in your video. (2) After replacing the broken hinge I was experiencing difficulty in reattaching the lid because of the cable connections....was hopng that I would not have to detach the cables from the circuit board as you did in your video. But alas I determined that was the only way to get the lid back on .... so despite your comment to be careful in removing the cables I inadvertently pulled the "base" of the cable from the circuit board thereby trashing the circuit board.
Thanks again for your video!
If anyone is having trouble reconnecting the wide blue ribbon to the back of the touchscreen, it is a bit more complicated than expected. If you look at the back of the touchscreen, where the wide ribbon connects, there is a grey, rectangular rolling lockbar.
This bar has 2 positions: lock and unlock. It will probably still be in the "locked" position. In this position, you can see a row of little slots along its long edge. It will look like it's tilted backwards.
You can't insert the ribbon if this bar is locked. It must be rolled forwards with your finger to unlock it. It will click into place. Instead of looking tilted, it will look squared. You won't be able to see the row of slots if it is unlocked. Roll it back and forth... lock it by pressing it back, unlock by pulling it forward.
Make sure it's in the unlocked position (no slots visible) and slide in the ribbon. It will likely stay in, but loosely. Then press the lock bar (roll it backwards) to lock the ribbon into place.
I hope this helps somebody!
Thank you very much for sharing. I'm sorry I didn't point that out and caused you some unnecessary trouble. I hope this helps someone. Have a great weekend!
15:28 you show the underside of the print head assembly and the ink feed tubing. on the tubing is there 2 return tubes that just sit in the 'soak' padding or do they actually connect to something
?
15:33 I can see the 'three' pair tube that runs to the head? but I can't see where the other 2 singular tubes are positioned. When disconnecting the right front facing side of the carriage, mine didn't come up as easy as yours. so I worked it until it just fell loose, (on yours there is a screw holding them to the bottom of the assembly with a white 'mount hold' but you just ripped yours out. I'm needing to clean the "ink" buildup all in the carrage and reassemble to hopefully fix for a client.
@@Network_Pat Hi, I am trying to establish which of the 5 tubes connect to the 3 ports of the mount hold at the bottom of the tray and in what order. And if the other 2 tubes are just positioned in the sponges or soak padding. Can you help? Did you get a solution to your question? Many thanks, Thanasis
Great video. Didn't solve my issue on my 7520. And yes that's a very good printer, but instead of having 5 ink cartridges, this familly of printer should have had reservoirs (ink tanks) like the newer Epsons and Canon printers. And not only that, the manufacturer should include in the life of the printer "X" amount of print heads and an easy way to clean ink charging section and replacing the felt, and a way to replace the 3v CR2032 battery if it needs to be replace. So if HP decides to make a tank version of this printer, they should implement my ideas and they would sell a lot of them.
Great video!! It helped me get the control menu off so I could get the cover over the glass pulled back to clean the underneath. Couldn't get the lid off from the glass holder. The 2 outer hinges came loose but the center hinge piece wouldn't come out. I'd love a hint how to get that out or point me to another video that does that. Thanks!!
Thank you this video was big help
You're welcome! Thanks for the feedback!! Have a great weekend!
Hi, thanks for this video. Have you also on for the HP 7610/7612 ? I have to gain access to both laterals of the printer. Thanks for any advise
Hi. Thanks for the support. I currently do not have the printer, but as soon as I find one, I'll try to make a video.
Great job, thanks!
Hello 303 Electronics. Thanks very much for your video. Yesterday I dismantled my HP 7520 with no problem at all. However, when I came to remove the printer unit, with all screws removed, the right hand side would not release, but there seemed to be nothing holding it. I had noticed that when you were finally removing this unit it did seem to be reluctant to come away. So I gave it a bit more of a pull and it released, but was bringing some sponges with it.
I did not want that to happen as they were soaked in thick black ink, as was everything else in that area, I just pushed them aside.
I then found I could not remove it completely as it was still held in place by 3 pipes on a bracket mounted to the base, I release the bracket. On removal of the print unit I found that there were 5 free floating pipes, where 3 of these had obviously pulled of one side of the bracket, whilst the other 2 I can only assume were open-ended and placed among the sponges on the baseplate.
The dilemma now is which out of the 5 pipes were connected to the bracket and in what order, and where were the other 2 placed with respect to the sponges.
I would be grateful if you were able to shed any light on this dilemma as to where these pipes connect. I have a photo of it that I have marked up the pipes and the bracket. This could sent to you if it would help.
So far I have washed out all the sponges and the baseplate. I do intend to clean all the old ink from the black parts on that side of the print unit. As there are no electrical connections to worry about I may well just wash it through with running water. Best regards, Dave.
Hi David, did you eventually get to the solution of the tubes and where they connect? I had the same problem, but also the sponges do not correspond to the tray structure so I am not sure where to put them back again after cleaning them.
Great video. Thank you
Excellent video brother
My father had bought one of these back in 2011. It sat in storage for the past 6 years when I re-discovered it and got my hands on it. I can't for the life of me get it to print even with new carts and a head. It'll either print yellow only, or dump out an empty page. Once I got it to smear a streak of black across the paper, but haven't been able to convince it to do it again. This is what I needed. Hoping tearing it apart and putting it back together will jostle the life back into it. Failing that I'm just gonna E-waste it and get a Brother printer.
Followed your video to replace paper door from one 7520 to another 7520. WiFi now doesn’t work & wonder if my hitting the memory card/usb port on left side of printer may have damaged WiFi module/board? Thanks.
🤔hmm, that process shouldn't interfere with wifi card. The cover in the left is just card port. Make sure that is connected properly, maybe that's the case. Wireless card is attached to main board. See if it got dislodged.
Useful! Thanks bro :'D
Thanks for watching. Have a great day!
Hello, thanks for this great video. By any chance, do you have instructions how to take apart the hp 7612? Is the build similar?
Excellent video! Thank you.
When taking the final part off, I messed up with the sponge. Do you have a picture how to position the sponge?
I have the 7520 and it wasn't feeding the paper. Then recently it disconnected from WiFi and I can't get it to reconnect. So I watched your video and took mine apart, cleaned it, and put it back together. Plugged it back in and it won't turn on.
Hi, I am having problems with my HP 7520. The printer display shows "paper size error". I have already check in my mac and the paper sizer is correct. I have also printed a status report directly from the printer menu and the error keeps there. When I hit OK in the paper size error msg, the printer starts printing but the second half of the paper jam. Can you help me? Thanks
Thank you for the video. Do you happen to have instructions on how I can slide that broken gear on the roller so I can replace it? I have tried gluing around it before but it always wears down and breaks again and stops feeding the paper. I followed everything till the end of the video except removing the printhead encasing. Thank you!
Hi. I usually turn off printer from the plug when the ink cartridge carrier is in the middle. If you wantvto manually spin it, there is a mechanism that slides back and forth under the carriage. Push it back gently and that will unlock the carrier.
Thanks for the video and great directions. I have been getting a "problem with red cartridge" message that prevents any operation. I put in a new HP red and it resolved the issue shortly but then it returned--on and off. I cleaned the print head and all the connections to each cartridge and behind the print head contacts-both sides. I was jiggling the print head ribbon cable one day and that seemed to get it going sometimes. I took it all apart today (thanks to your encouragement) and cleaned all ribbon cable connections and sockets to no avail. I replaced the battery. Could I have a broken wire in the ribbon cables from the print head to the main circuit board? Bad connection from printer head to the small print head circuit board the 2 little ribbon cables connect to? Bad solder on that small printer head board? I ordered 3 Brother printers a month ago and there are none to be had due to shipping crisis. I would like to get this 7520 going but am out of ideas. Seems parts are crazy expensive. Any ideas as to what I can check??? I tried slipping a blue HP cartridge in the red slot and is says damaged or missing red. It isn't sensing the red cartridge is good and in place. I see one guy re-soldered some bad power connector contacts so solder may be an issue but I have power and when it decides to work it works great. Something intermittent is the problem and it is now to the point it doesn't work ever. I hate to spend money on another red cartridge. I really appreciate your videos and advice. Any suggestions would be greatly appreciated.
Have cleaned the printhead, pins and contacts, still comes out blank, any ideas as to where to look further to solve this problem. The printer is an HP Photosmart All-In-One 7520
Thanks will check.
I hope it works. Have a great day!
My pick up gears don't engage with the back gears in the gear box on a 7520. How do I get to the gear box without having to take the complete printer apart? Can I just take the bottom off to access? I used a mirror to view the action and the back three gears did not engage. Please advise.
my pick up roller assembly is busted. Can I quickly access it just by removing the bottom only? I don't want to have to disassemble the entire printer.
i lost my plug for my 7520 photosmart printer will the plug form a 7525 fit my 7520?
Hi. Yes. You can use same power adapter for HP Photosmart 7510, 7515, 7520, or 7525.
That video was amazing! I have the 7515 so you know it's old. I've having black ink smudges occurring on my cards and envelopes. Looking inside at the right of the ink cartridges where the printhead rests when not in use, I can see lots of blank ink buildup. Wondering if there is an easier way to clean this area without disassembling the whole unit as you did. I have been looking for a printer replacement, but HP simply does not make printers like these old ones anymore. Any recommendations?
Hi. Yes. Cleaning inside the printer does not require disassembly. I used butter knife or screwdriver. Be careful not to break anything. You can also remove printhead and clean it.
Epic life saver. Thank you !
🙂🙂🙂🙂Glad I could help! Thanks.
@@303electronics I have a few questions on this printer if you have time to give some advice. I noticed inside the printer, where the ink head rests, all the way to the right, there seems to be a plastic container. I think it is to catch any access ink, and it has a mesh piece. Is this where the printer head cleans itself?
@@ninja226 Hi. The pads absorb excess ink, yes. The printhead is cleaned with rubber squeegee that slides back and forth under the printhead rest. The printhead cycle purges ink through printhead and then wipes it off with squeegee. It is best to clean printhead manually to avoid losing lots of ink.
I don't see where you took the photo tray apart. Mine is apart, as I pulled it out while it was engaged, and I can't figure out how to get it back together.
There is a gear that causes the paper to be fed. After years of use it tends to break free from the shaft and needs to be reglued. How much of the printer needs to be disassembled so that the gear can be exposed and easily glued onto the shaft?
What type of screw driver do you use to remove the main paper feed roller?
Most screws on this printer are star shaped torque screw size 10. T10. Some screws will be a bit smaller.
It would be soooo helpful if in your “printer repair and mantenamce” playlist, you make a playlist for HP, another playlist for Cannon and another for Epson, etc. And even better would be to clump together like printers, ie. All HP Photosmart. Maybe alphabetize groups in one manufacturer’s playlist. 189 videos is a lot to sort through when you need help.
Does anyone happen to know if there is a service manual or even a parts diagram for this model?
I keep getting "One or more cartridges appear to be missing or damaged." I replace the cartridge(s) with new and will get the same message - sometimes the same cartridges, sometime a different one. It is not the cartridge. Already replaced the print head. Ideas?
Hello! I watched your vid and was able to fix the paper roller/gear issue. Unfortunately, now I'm receiving printhead error. I have taken this apart a few times and am sure I have all cables/screws/whatnots all back in the correct place. Any insight into what could be causing this?
do I have to do all that just to change the roller that grabs the paper?
Yeah, it's a pain. I never replace that part because of too much Disassembly.
Great Video, I have had this printer for 8 years and am now starting to get printer errors, which I don't know what they mean. If I keep hitting OK on the Print screen, it will eventually print but makes a lot of noise. Don't know what to replace it with. Thanks
If you really like this printer, you can get a replacement on ebay or local ads. You will find that HP Photosmart 7510, 7515, 7520, and 7525 are all similar. Save your ink and printhead since sometimes when ou get a used printer, those are needed. Easy to swap out.
Hi 303 Electronics - Thank you for posting this video. I managed to follow your video step-by-step and was able to dissemble and re-glue my broken gear that moves the ADF for general paper printing. One of the mishaps that I found was ensuring that the printer assembly was aligned properly so that the duplex part is able to enter, so I had to dissemble and reassemble again. The printer is working mechanically, but the control panel is no longer responsive or lights up. Also, my power button and wifi light no longer work. I'm able to print documents via the cloud, just need to disconnect the cable to shut it off. Do you have any suggestions on how to remedy this? I've checked the cabling several times and everything is connected in it's proper place. Thanks again for your help.
I have the same problem that I want to repair. I am wondering how much did you have to disassemble in order to expose the gear that needed work.
@@garthmicro It's been about 2 years, but from what I can remember I dissembled all of it. On the video it's around 15 minutes in. Good luck to you. I ended up purchasing another printer since it was hard to manage the ink levels and changes to my WiFi. Becareful not to damage the wires to the circuit boards!
@@jaimevillasenor9221 Thanks for taking time to reply.
Can you tell me how to fix the copy restart I think there's a piece missing on the restart button
Hi thank U 4 your suggestions. I have another issue: there are two little tubes on the bottom of the black plastic part, close to other three longo tubes. those short little tubes are fixed on on side but apparently free, without any other connection on the ending side. Is it correct? should the ending part be free with no connection? thank for your kind replay. A.
Need to open my photosmart 5720 because the rollers that feed the paper from the tray wont spin. Its a good printer and I have printed over 5k copies without any problem.
Have the same problem. I looked with a flashlight and a small mirror and I can see one of the plastic gears has stripped from the metal rod that drives it. if you skip to 15:30 his thumb is resting on the rod to the left are the gears that drive the rollers.
Can I remove the scanner assembly and ADF and use them without the printer assembly? I assume I would have to remove the main board from the bottom to make this work.
Do you have, or have a source for the small black plastic gear press-fitted on stainless shaft that drives the paper pickup roller assembly? desperate, need a couple or more.
Hi. I may have a few, not sure though. I will check Monday and let you know.
@@303electronics Hi, I know there has been a bit of time, but I have just watched this video. THANK YOU VERY MUCH. It helped a lot disassembling. I have the issue with this black plastic gear. I glued it twice on the shaft where the serrations are, but it now appears split. So the shaft rotates but the gear not. Do you have any spare ones I can buy or know where I can find them?
when I ordered ink from HP they sent me a large black for the last slot and the first slot the blackdidnt fit. what do you order for the first slot.
Hi. It's called a "photo black" cartridge. I don't know why they made it so complicated.
Did you skip the disassembly of the scanner assembly? My scanner mechanism has stopped working and I'd like to know how to disassemble the scanner components for replacement.
Hi, awesome video. How do you fix the printhead when it doesn't automatically move to the center when the printer is open. It doesn't slide. The error message for printhead missing keeps coming up... can you help?
First thing to check is to make sure all ink cartridges are down and locked. Squeeze your hand over the printhead and make sure all cartridges are down.. If that is all good,, try this: Open the cover on side of the printer where printhead is. You need to remove 2 or 3 screws to do that and the side pops off like I show in this video. Then spin the gear exposed and the the mechanism that locks the carriage will release the carriage.
@@303electronics ok, I took the side off but the gear won't turn... and the little pulley belt seems loose, could that be the problem?
Great information and detail... I was able to fix the paper feeder not dropping down!
Unfortunately connecting that flexible ribbon back into the screen seems to be a bit harder than taking it apart LOL
Do you happen to have a video on how to slide that ffc into the connector?
Javier I figured out how to do this send me an email and I can walk you through it. james_cornia@yahoo.com
I hope you don't mind, I'm going to contact you too, I have the same problem with the wide blue ribbon.
I can't do it... I am trying to replace the nonfunctional screen, I purchased a new one, but I'm really having trouble getting it back on. Please help? It's really not a "put it together the same way in reverse" kind of thing and now I'm stuck.
@@ladychroe I feel your pain, I didn’t see James offer for almost 3 months after he sent it and I haven’t heard anything either… I’ve searched for any type of info on how this clip works to no avail, I sorta gave up but I’ll try again and see if I can figure it out and hopefully have an answer for you 🧐
Can you please show a tear down of a HP all-in-one 250 mobile printer? When I was trying looking for paper in the unit due to continual paper jam errors and the pick up roller not picking up paper, I accidentally pulled out a board connection. I got as far as taking apart some of the molding and the top lid. I at a loss. This printer is JUST out of warranty and has a high price tag. I don't want to pay for repairs if I don't have to. Thank you!
My hp photosmart 7520 is saying there’s a paper jam when there isn’t one HELP
Does anyone have an idea as to how to repair one of the cartridge contact pins (black cartridge)? The pin is bent and won't spring back to contact the cartridge. There's no way that I'd tackle taking apart the printer.
Hi. See if this video helps you. If it is not broken off, I suggest using tweezers.
th-cam.com/video/M2r_Cs17nDw/w-d-xo.html
@@303electronics Hi. Thanks for your reply. We initially bought the printer used. After replacing the black cartridge, we got the not recognized error. I found the same video at that time and was able to lift up the pin. The other day the same thing happened after replacing the cartridge (my wife did). I sent her the video at her store and she's been fiddling with it to no avail. I'll be checking it out in a couple of days, myself, and bringing tweezers as you suggest but I'm afraid that it might be beyond repair. I really appreciate your reply. Len
@@gonepostal474 Thanks. I hope it works out! Have a great weekend!
Thank you for this video, very helpful to enable me to investigate deep inside to try and solve my general printer error of 0x6100004c which in most Google searches talks about the print head, cartridges and paper blockage of which all is fine. So I've wanted to take the lid off to investigate further.
Would you have any other advice?
Can I send to you a photosmart 7525 printer for repair???
I currently do not offer service. What is wrong with your printer?
Mille mercis 👍👍👍👍👍👍👍👍🔧👍nice vidéo
Can you please explain how to replace a scanner light bulb on a 7520 Photosmart printer. Printing blank pages!!
It most likely is not the scanner. When you are printing from the computer, are the pages also blank? If so, the ink cartrudges are dry or printhead is clogged. Also to test if your scanner lamp is working, make a scan to computer or media card. If the scan is successful, then scanner is working properly.
303 Electronics There is no light when scanning. I can print via Bluetooth from my phone and it’s fine. Won’t print from paper feed or regular scan. If it does only bits and pieces from feed. Ink is new.
How do I replace the scanner lamp? There is no light that comes on when it scans or tries to copy. I assume it’s burnt out?
Good video, but is there a "Taking Apart HP Photosmart 7520, 7510, 7525, 7515 SCANNER Disassembly" ?
My 7520 has a deep paper jam, but when I turn it on I get a message "Improper Shutdown" and then the unit turns off and the Power Brick PSU shuts down (no green led). Obviously the paper jam has caused the unit to shut down to protect itself??? Do I just need to take it apart and remove the paper jam and then the message should go away? Thanks for any tips
I have this printer 7520 and it no longer recognizes any of the ink cartridges. I have exhausted hp’s Troubleshooting guide and replaced the ink as well as the head. Any suggestions for saving this printer from the heap?
We had trouble getting the LCD panel connected properly again.
Hello. Nice video, however I have little bit different problem. I have found a printer, HP7510 in a garbage place, but no external adapter was nearby. There are 3 pins for power on the printer, middle is clearly GND, upper one has crescent, and down nothing. Above are just written two voltages 32/12V. I used ATX 200W power supply as a source of the voltages but have no idea how to connect it. Please if you can look at my small video here and help me if you are so kind. It is only 5 minutes to meassure working power adapter and fwd me the info what voltage is on which pin. @. Thanks in advance. Martin.
Как собрать обратно, есть видео?
Hi. Not yet, I'm sorry. Have a great day!
grazie
My Officejet 7510 will not print black text. Everything else works fine. And I have put in a new ink for the black and did the clean by soaking of the printhead ... It still does not work
There is two black ink cartridges.The one you need for text black is the bigger of all. Try to flush black color like in the video in this link:
th-cam.com/video/DFdM9Z6Nnxg/w-d-xo.html
What does the error code C2FE0100 on my hp C309a printer mean?
No black ink. Cleaned printhead even got new printhead but still no black int. Anyone got any idea ?
I just did this and now my touch screen is white and the power button doesnt illuminate when on 😔 and won't turn on unless I unplug the power cord
Hi Kaki - I also have this problem. At one point my control panel was white and now it doesn't light up at all. Did you resolve this issue? If so, what did you do to fix it? Thanks
@@jaimevillasenor9221 I tried fixing it but I couldn't return the band to it's original position so I just ended up getting rid of the printer and buying a new one 😔
After putting everything back together my ink carrier is moving really fast and hitting the sides. Then comes up with error code Carriage jam saying the print carriage cannot move. But it’s definitely moving.
The timingvstrip needs to be put back in position. It is a small film in the back of the carrier which is attached from one side to the other. If it is not fed through properly, it will not be able to direct the carrier where to go and it will behave the way your printer is now.
Encoder timing strip was not in the right spot. Fixed it by taking the ink carrier out and lifting the small grey cove to be able to see where it should go.
@@jamescornia Great, I'm glad you got it all figured out and got the job done!!! Thanks for your support. Have a great day!
I am trying to fix my printer the same one taken apart in this video. I am having an issue with mine where it does not roll the paper any longer. I cleaned my printer and followed another trouble shooting video but the issue is the pick up rollers or (the rollers that direct the paper up) I have paper in my tray but it tells me to put paper in the try. Can anyone help me to a video that can show me how I can fix this issue... buying a new printer is not in my budget. Thank you.
Charlissa Berry th-cam.com/video/1n5Fwn4hwik/w-d-xo.html
Please buy a tripod and set up each shot with proper lighting. Thanks!
Thanks for the advice. This is one of my earlier videos, but I do know that I need to improve that. I'm working on it. Have a great day!
Don’t quit your day job.
Haha. I get your suggestion. Thanks for the comment. I will work on improving my work.
Please Please Help!!!!!!, I need to replace the locking lever for the printhead carriage..... Can't find a replacement.... Called HP, they wanted Me to buy a new printer.... Companies so useless
Hi. I may be able to sell one to you. Should be around $20 if I will be able to take it off.
@@303electronics please again, how?
My email is kjamone@gmail.com, any info will help
I appreciate the video but like you called the straight edge screwdriver a Phillips. lol. Regardless you know what you're doing.
Why would I buy a professional printer to buy a new one
YOU may know what you're looking at. But WE can't SEE what you're doing. Reshoot & repost. It was an aggravating video to watch.
Do any TH-camrs review their own videos? One-handed camera, poor lighting - it doesn’t work. Save your efforts.
This video is essentially useless for repairing the ADF on top of the machine. There's a little blue power ribbon that attaches next to the hinge on the document feeder. When it comes out, you're done. It isn't going to be reattached... no matter what. End of story. This is an example of a completely ridiculous engineering design. It really makes that repair impossible. If that is actually the purpose, it doesn't motivate me to buy another HP printer... even though the machine is quite durable and lasted a good long time. A complete replacement of the top half of the machine may be possible. But disconnecting the power to that seems to be overlooked too. This video is useful if you only want to take the machine apart, for some reason.