Finally !, Someone who shows how to remove a sticky back from the TV. Sounds simple, but if you've never done it before, it's a headache . Thanks so much for the info.. 5 stars !
This guy know his stuff. Other videos just change the whole board without bfurther troubleshooting, it might be faster but you learn nothing besides spending more money.Kudos to you!
Nice video man! It's a bit of a random suggestion, but I thoroughly enjoyed that video with the cheap Chinese led light. I think it's a marvelous concept, buying cheap, poorly designed electrical products and inspecting them. You make it both interesting and entertaining!
I have this set - 19" 19LV506, in white, tv and dvd combo - it has been a great tv. It replaced my 1984 Mitsubishi CRT tv, which had a slighter better picture - with the LCD you can't lay on the floor playing with dog and see the tv well, you have to be more "straight on" to view the tv correctly. It has never needed a repair on tv or DVD, and the picture is about the same as on my larger Vizio in my bedroom. Plus, I love the "white" look - I hate gray and black as tv bodies - Keep in mind as I write this, the tv is probably 10 years old or so -
This is a very trivial repair that any professional knows since 2013. Not only it’s a failure, it’s a bad design. When you find DO-201 diodes in parallel, just because they didn’t want to use (or it didn’t fit) a single larger diode, it’s a bad idea. This is a very recurrent failure in Vestel and other brands. My solution is NOT replacing the bad diode, neither replacing all 3 with same new diodes, because it’ll happen again. I replace them with a double schottky barrier in TO-220 package with a little heatsink, with the same (or more) power than the sum of diodes power. This never fails again.
I am wondering hearing you talking about to repair tv's here in my country most tv repair shops are closed now. I think this bussiness are dead. I am in electronics for 40 years, I fix treadmill machines and some other stuffs , I have a lot of work because anybody do it this here. Please comment. Cheers.
Hi great video....I have a toshiba 39L4353D, it powers up and the picture comes on, but no sound. Also you can't change channel or use any of the functions on the remote, you also can't change channel, sound etc via the buttons on the tv either. I know I'm asking a lot, but have you any idea where to start looking for the problem? Thanks in advance.
Well I got the back off, now I don't know if I have to replace the whole power board, or something else. Black screen, have sound, and can see pic'. with flashlight. What now? HELP!
Hey, that's a great video boyo. I tend to cheat and go straight to visual check then the hard component... diodes, rectifier, caps, etc. Cheers for sharing. 😊 PS, you look like one of my good friends. 😁
Can I have a short and the fuse be still good? Also your hands are blocking the test points. Are you testing for shorts across the electrolytic cap? Thank you for clarification.
Good day, Please I have this TV Android 4k tv 65L9450VE The TV has been on safe mode and did not respond to remote nor button, plays radio station at the background and I do not know how to hardrest it. Kindly assist on steps to take to make it functional again. Thanks
I have an issue with a Toshiba LCD. It does not power on nor light anything. A diode blows and it only happens on stand by. If I replace the diode and the TV is on, it workshop. If I go on stand by, after a while the diode goes bad again. Any suggestion? Thank you.
Due to a hit on the screen of my LED 42inch Toshiba TV, the pictures are distotedly displayed with lines running. Whether display can be changed? Cost pl...
i was wondering where you are based and can i bring you my tv? i have an LCD toshiba that goes dark every time a switch it on. i can see the screen then it goes dark. the light in he front panel is normal, meaning green when on and red when off. The sound is also working. when you do the flash light test you can see a message in the center of the screen. That's all
I have a 50" Toshiba TV when i first turn it on i have sound but no picture, it takes over half hour for TV to warm up and get a picture. the picture slowly comes in over that half hour or more period. seems to keep taking longer and longer for picture to come on.
my old 21" crt had the same problem, then one day it didn't turn on, could be due to bulging capacitors, i couldn't be bothered to fix it so i threw it out.
This is a very helpful video and as others have said you are a great teacher. I have a 40 inch Toshiba TV that looks to be about roughly the same vintage as the one you are working on (mine was purchased in 2008). It works great except it no longer retains the settings I entered during installation (so each time I power it on, I have to set it up again). I'm guessing that the internal battery that retains these settings no longer holds a charge. Is this the sort of thing I could fix on my own? I'm reasonably good with electronics (I have replaced batteries in smartphones and built my own PC). Do I need a soldering iron to replace the battery? I am tempted to unplug the unit and open it up to take a look. I've searched online for this issue and have not found a repair guide.
That TV looks like a similar model to mine. The model is a 22D1333B which will not switch on but just has the standby light flashing red to green. Any ideas please. I have tried holding the small button on the side for around a minute to discharge any static buildup but it still wont switch on. Do you think its a power board problem?
Hi I have a toshiba 43UA5D63DG and they told me that was the panel it was broken, with one is the panel. I can see a littel light in the sceen in dark. Br Martin in sweden
Good video with plenty of explanation and visual. I would be interested in a video that explain the power supply board usual logic. The different schematics on them and what are their use. I heard you named them (filtering and so on) but I don't really know what is their function. Or if you know some website with tutorial on that it would be nice! Thank you for the video, I have a similar broken TV here and I might get lucky with the same fix!
thank you, I'm glad you enjoyed the video.ok, i can do a video on switch mode power supplies and how they work. thanks for the suggestion. you know this is quite a common problem so there is a good chance you might be able to fix your set, good luck. thank you for your comment.
IMHO for the learners point of view, the camera should have been on the points where the readings are being taken, a short is being detected. For the meter readings the viewer can rely upon your word.
These crappy Vestel sets always blow their secondary rectifier diodes, its actually because they get vastly overvolted for very short periods at start up. The general consensus on the repair forums is to install 400v+ fast recovery diodes and thermally bond them to help take care of the increased thermal dissipation. Thank goodness the one you serviced didn't blow the primary IC too which usually happens when a 24v rail rectifier shorts. Search for the badcaps thread called "Why so many Vestel 17PW25-4s failing with shorted diodes - Answer from PSU expert!" for the details.
Yeah its not the first one i have come across. the cheap digihome tv in my kitchen is made by vestel, im just waiting to see how long that one lasts before it needs repair.
viperfrank You'd think by now that manufacturers would be able to produce a low cost long lasting TV especially with all the electronic waste awareness we have these days. But then they wouldn't be able to sell you a new TV in a few years! Ah well at-least it keeps guys like us in business.
Thank you for this video James. Well done, well explained. Such videos are a great help. I had exactly the same problem (faulty Vestel PSU) on a Toshiba 24W1333G. This TV is used in a country house. The first time, it failed after only one month of service and got repaired under warranty. The second time, 2 weeks ago. This 2 year old TV was used maybe 2 or 3 months in its life. Unacceptable. So I decided to repair it myself, and discovered the diode just close to the one which got changed previously was also in short-circuit. Following the thread in badcaps you mentioned above, I replaced all the original SB5B0 Shottky diodes by ultrafast STTH5L06 (600V) and the UF5401 by UF5404. Hopefully this will be the solution that will improve the reliability of this Power Supply Unit. That said, they used up to 4 DO201-AD diodes in parallel instead of a unique high current high voltage TO220 diode with a heatsink. That cut costs, but here is the effect of such a bad design: this PSU is not reliable at all!
What's the best way to fix a Toshiba TV with the USB over current status popup? TV is out of warranty and too expensive to repair professionally. I've seen some youtube clips talk about IC160 or chip IC161, but they are not in English so I don't really know what they did.
what was the charge for the repair? and next time buy one without tthe dvd player. i dont care for components that have more than one built in, like that one. id rather have all seperate media components thanks for sharing
please can you give me advice i have Toshiba 55L621U i change main board and t-con board, but still same no sound and screen glowing dark blue i cant even use menu options . HELP this tv make me crazy :)
"390 Volts ! that's quite high !" That is because of the PFC. A PFC is a small DC-DC converter whose only purpose is to make the buffer-capacitor look like a resistor to the power-company. The EU demands this. Which Brits don't like.
you wellcome,I hope someday you'll visit Viet Nam.My country still in backward so fixing old TV is a good job!I wish I have a chance to learn more and more a bout electronic from internet and documents for my work.so I hope you'll make more Videos.Thank you and see you again!
Google will put me in prison for 500,000 years...hahaha...great video tuts...entertaining and educational at the same time...clean English...really like that...
My toshiba LED tv 32L5400ze which i bought 3.5 years ago recently started to display an error message whenever i switched it on. The message shown is "Usb over current status detected. Please remove the USB and unplug your tv." Please help me to fix this problem dear friend.
Everything is beautiful but this method of "smoke" is a bit exaggerated - as the short circuit I solder all diodes and solder the new and is after repair ... I greet on behalf of the Polish soldier brothers.
Hi Dude.. You sound like a Londoner? I got a nice job for you , My custom made pre amp is not working. it short circuit and need a new power supply and other bit needs replacing. of course I'm happy to pay and would make a fantastic vid .. let me know please?
You are a great teacher. You dont need music in background your voice is soothing and enjoyable to listen to.
Finally !, Someone who shows how to remove a sticky back from the TV. Sounds simple, but if you've never done it before, it's a headache . Thanks so much for the info.. 5 stars !
this is the best technical vidio i have see so far keep them coming
This guy know his stuff. Other videos just change the whole board without bfurther troubleshooting, it might be faster but you learn nothing besides spending more money.Kudos to you!
Fantastic!!!! I cut the legs on my diodes and found the had one. I'll resolder them and put a new one in. Great video.
Best repair video I have seen for a long time. Many thx!
Great repair! Congrats!
It would be great if we saw where you place your probes when you take your measurements, thank you
when you was talking about the screws you said they got legs i was thinking the same thing the same time you said it. great vid.
Yeah, those screws do go walkies, a couple of them did during the video.
I'm glad you enjoyed the video, and thank you for your comment.
I know at UBREAKIFIX we used a magnetic mat for all the little tiny iPhone screws. Those really got legs . LOL
I know absolutely shit about this stuff so I find it very cool that people do. Good job.
Gread vid, can this TV be coverted to run on 12v dc?
17:42 I like this power supply, where can I buy it?
Great stuff Frank! I can't wait to see more from you.
thank you, i have some more repair videos filmed, just editing them at the moment.
thanks for your comment.
Very good video, thank you for not adding annoying background music.
Nice video man! It's a bit of a random suggestion, but I thoroughly enjoyed that video with the cheap Chinese led light. I think it's a marvelous concept, buying cheap, poorly designed electrical products and inspecting them. You make it both interesting and entertaining!
I have this set - 19" 19LV506, in white, tv and dvd combo - it has been a great tv. It replaced my 1984 Mitsubishi CRT tv, which had a slighter better picture - with the LCD you can't lay on the floor playing with dog and see the tv well, you have to be more "straight on" to view the tv correctly. It has never needed a repair on tv or DVD, and the picture is about the same as on my larger Vizio in my bedroom. Plus, I love the "white" look - I hate gray and black as tv bodies - Keep in mind as I write this, the tv is probably 10 years old or so -
I felt like shouting at my screen to you to say "it's the diode!" As I've fixed one like that last year. Really easy fix.
This is a very trivial repair that any professional knows since 2013. Not only it’s a failure, it’s a bad design. When you find DO-201 diodes in parallel, just because they didn’t want to use (or it didn’t fit) a single larger diode, it’s a bad idea. This is a very recurrent failure in Vestel and other brands. My solution is NOT replacing the bad diode, neither replacing all 3 with same new diodes, because it’ll happen again. I replace them with a double schottky barrier in TO-220 package with a little heatsink, with the same (or more) power than the sum of diodes power. This never fails again.
You're back mate! Nice one. Always enjoy your vids!
thanks mate, i enjoy making the videos so i am glad you enjoy watching them.
thanks for your comment
I am wondering hearing you talking about to repair tv's here in my country most tv repair shops are closed now.
I think this bussiness are dead.
I am in electronics for 40 years, I fix treadmill machines and some other stuffs , I have a lot of work because anybody do it this here.
Please comment.
Cheers.
Hi
Hi great video....I have a toshiba 39L4353D, it powers up and the picture comes on, but no sound. Also you can't change channel or use any of the functions on the remote, you also can't change channel, sound etc via the buttons on the tv either. I know I'm asking a lot, but have you any idea where to start looking for the problem? Thanks in advance.
My Toshiba TV (32dt2u) shuts off after a few minutes. Any ideas?
Well I got the back off, now I don't know if I have to replace the whole power board, or something else. Black screen, have sound, and can see pic'. with flashlight. What now? HELP!
Hey, that's a great video boyo. I tend to cheat and go straight to visual check then the hard component... diodes, rectifier, caps, etc. Cheers for sharing. 😊 PS, you look like one of my good friends. 😁
is there a good place to get board components like diodes and caps etc, I know online is best but how about a shop/store, in the uk.
Well done, Bravo!!!!
Can I have a short and the fuse be still good? Also your hands are blocking the test points. Are you testing for shorts across the electrolytic cap? Thank you for clarification.
very good explanation thanks
Good day,
Please I have this TV Android 4k tv 65L9450VE
The TV has been on safe mode and did not respond to remote nor button, plays radio station at the background and I do not know how to hardrest it. Kindly assist on steps to take to make it functional again. Thanks
I have an issue with a Toshiba LCD. It does not power on nor light anything. A diode blows and it only happens on stand by. If I replace the diode and the TV is on, it workshop. If I go on stand by, after a while the diode goes bad again. Any suggestion? Thank you.
The fusible resistor (1.8 ohms) and the voltage regulator needs to be replaced.
Due to a hit on the screen of my LED 42inch Toshiba TV, the pictures are distotedly displayed with lines running. Whether display can be changed? Cost pl...
i was wondering where you are based and can i bring you my tv? i have an LCD toshiba that goes dark every time a switch it on. i can see the screen then it goes dark. the light in he front panel is normal, meaning green when on and red when off. The sound is also working. when you do the flash light test you can see a message in the center of the screen. That's all
I have a 50" Toshiba TV when i first turn it on i have sound but no picture, it takes over half hour for TV to warm up and get a picture. the picture slowly comes in over that half hour or more period. seems to keep taking longer and longer for picture to come on.
my old 21" crt had the same problem, then one day it didn't turn on, could be due to bulging capacitors, i couldn't be bothered to fix it so i threw it out.
This is a very helpful video and as others have said you are a great teacher. I have a 40 inch Toshiba TV that looks to be about roughly the same vintage as the one you are working on (mine was purchased in 2008). It works great except it no longer retains the settings I entered during installation (so each time I power it on, I have to set it up again). I'm guessing that the internal battery that retains these settings no longer holds a charge. Is this the sort of thing I could fix on my own? I'm reasonably good with electronics (I have replaced batteries in smartphones and built my own PC). Do I need a soldering iron to replace the battery? I am tempted to unplug the unit and open it up to take a look. I've searched online for this issue and have not found a repair guide.
That TV looks like a similar model to mine. The model is a 22D1333B which will not switch on but just has the standby light flashing red to green. Any ideas please. I have tried holding the small button on the side for around a minute to discharge any static buildup but it still wont switch on. Do you think its a power board problem?
Great to see you back - have missed you. Always look forward to your vids. I'm not electrically minded but still find them fascinating.
thanks a lot mate, i enjoy making the videos so i am glad that you enjoy watching them.
thanks for your comment.
what???? In what universe does the DC going to the transformer?
Hi I have a toshiba 43UA5D63DG and they told me that was the panel it was broken, with one is the panel.
I can see a littel light in the sceen in dark.
Br Martin in sweden
Good video with plenty of explanation and visual.
I would be interested in a video that explain the power supply board usual logic. The different schematics on them and what are their use. I heard you named them (filtering and so on) but I don't really know what is their function. Or if you know some website with tutorial on that it would be nice!
Thank you for the video, I have a similar broken TV here and I might get lucky with the same fix!
thank you, I'm glad you enjoyed the video.ok, i can do a video on switch mode power supplies and how they work. thanks for the suggestion.
you know this is quite a common problem so there is a good chance you might be able to fix your set, good luck.
thank you for your comment.
IMHO for the learners point of view, the camera should have been on the points where the readings are being taken, a short is being detected. For the meter readings the viewer can rely upon your word.
These crappy Vestel sets always blow their secondary rectifier diodes, its actually because they get vastly overvolted for very short periods at start up. The general consensus on the repair forums is to install 400v+ fast recovery diodes and thermally bond them to help take care of the increased thermal dissipation.
Thank goodness the one you serviced didn't blow the primary IC too which usually happens when a 24v rail rectifier shorts.
Search for the badcaps thread called "Why so many Vestel 17PW25-4s failing with shorted diodes - Answer from PSU expert!" for the details.
Yeah its not the first one i have come across.
the cheap digihome tv in my kitchen is made by vestel, im just waiting to see how long that one lasts before it needs repair.
viperfrank You'd think by now that manufacturers would be able to produce a low cost long lasting TV especially with all the electronic waste awareness we have these days. But then they wouldn't be able to sell you a new TV in a few years!
Ah well at-least it keeps guys like us in business.
Thank you for this video James. Well done, well explained. Such videos are a great help.
I had exactly the same problem (faulty Vestel PSU) on a Toshiba 24W1333G.
This TV is used in a country house. The first time, it failed after only one month of service and got repaired under warranty. The second time, 2 weeks ago. This 2 year old TV was used maybe 2 or 3 months in its life. Unacceptable.
So I decided to repair it myself, and discovered the diode just close to the one which got changed previously was also in short-circuit. Following the thread in badcaps you mentioned above, I replaced all the original SB5B0 Shottky diodes by ultrafast STTH5L06 (600V) and the UF5401 by UF5404.
Hopefully this will be the solution that will improve the reliability of this Power Supply Unit. That said, they used up to 4 DO201-AD diodes in parallel instead of a unique high current high voltage TO220 diode with a heatsink. That cut costs, but here is the effect of such a bad design: this PSU is not reliable at all!
What's the best way to fix a Toshiba TV with the USB over current status popup? TV is out of warranty and too expensive to repair professionally. I've seen some youtube clips talk about IC160 or chip IC161, but they are not in English so I don't really know what they did.
good to see you back buddy, hope all is good
thanks mate, i enjoy making the videos so its good to be making videos again.
thanks for your comment.
what was the charge for the repair? and next time buy one without tthe dvd player. i dont care for components that have more than one built in, like that one. id rather have all seperate media components
thanks for sharing
please can you give me advice i have Toshiba 55L621U i change main board and t-con board, but still same no sound and screen glowing dark blue i cant even use menu options . HELP this tv make me crazy :)
"390 Volts ! that's quite high !" That is because of the PFC. A PFC is a small DC-DC converter whose only purpose is to make the buffer-capacitor look like a resistor to the power-company. The EU demands this. Which Brits don't like.
you wellcome,I hope someday you'll visit Viet Nam.My country still in backward so fixing old TV is a good job!I wish I have a chance to learn more and more a bout electronic from internet and documents for my work.so I hope you'll make more Videos.Thank you and see you again!
Very good video. Respect!
Great work but the wick to "clean the pad" is really not necessary. Those pads were nice a clear as is and will take fresh solder no issue.
Please how can I find you. So that you can repair. Mine too.
And how much is the mother bod?
Where are you located please?
those built-in dvd drives are nothing but trouble, have to remove the dvd power cable because my drive kept making that motorized noise nonstop.
Just use your meter and test the diodes job done ✅
wow welcome back!!
thanks mate, glad to be back.
What does No Clean flux mean please?
No one seems to know
Just Subscribed
sir i have this tv but, tv's have no colour picture .there have only sound and black and white pictures.sir hope you solved my problem.....
kind hearted guy! damp my bad english but I like your clips.Thank you very much
Thank you mate, I appreciate your feedback.
I'm glad you enjoyed the clip and thank you for your comment.
Google will put me in prison for 500,000 years...hahaha...great video tuts...entertaining and educational at the same time...clean English...really like that...
Thanks for your great video
cheers mate just what i needed to know
Very good Job
Is there a way to contact you, regarding my TV
Thanks
Nice, handsome and smart,.love.the.vids.
My toshiba LED tv 32L5400ze which i bought 3.5 years ago recently started to display an error message whenever i switched it on. The message shown is "Usb over current status detected. Please remove the USB and unplug your tv." Please help me to fix this problem dear friend.
Everything is beautiful but this method of "smoke" is a bit exaggerated - as the short circuit I solder all diodes and solder the new and is after repair ... I greet on behalf of the Polish soldier brothers.
Nice video! Dead shorted diode.
i got a toshina tv green light then red y
btw. ceramic capacitor fail short all the time :)
toshiba tv 32 inchhow midel not show &both said show pichair came howcan reair
Nice one.
well done!
you made mistake ....400vsd because of power factor correction circuit
You can put music in the background, just goto the TH-cam Audio Library at
th-cam.com/users/audiolibrary
Hi Dude.. You sound like a Londoner? I got a nice job for you , My custom made pre amp is not working. it short circuit and need a new power supply and other bit needs replacing. of course I'm happy to pay and would make a fantastic vid .. let me know please?
Nice!
thank you.
Good vid, typical Vestel junk Tv failing
Plz Hindi