Great video, Sorin. I know it was painful and frustrating, but it was good to see a live example of an ugly fix. Despite all your best efforts to save the usb/sd card reader board, it still would not work with it installed. So improvise, like you did. Strip it out and move on. The customer will understand and will gladly accept a working machine over a dead one. You definitely deserve a break after this one.
Thank you for sharing. Anybody can have a troublesome repair every now and then. You don't hide it, most people don't show when things go wrong. Great video! Great example on not panic when things go wrong.
@@chrisventer8494 why wouldn't he charge him? Are you mad ? Oh let me guess you are disappointed right ? Client can have dead laptop or working without one USB and SD card reader. What do you think client will choose ? Sorin spent 2 hours on that laptop to give client something and still be able to make some money. Go to work for charity with this attitude. I bet you would not be able to do anything with this laptop , people like you just come to judge others.
Think its between client and the repairing tech. if some part get disabled as long as client agree,maybe he doesnt use disabled parts anyways,phone client and ask what he wants.
Thanks for the video! I like watching real life troubleshooting. I have to get caught up on your videos. I wouldn’t change a thing about your videos. It’s very honest and real.
Your channel came up after another TH-cam I was watching. I like you a lot for verbalizing your thought process as you work on it I started working on computers when punching and reading 80 card column cards was considered software. The last chip I changed was on a 7 layer board. We cut the legs off the old chip and soldered new chip to the legs. We called it the " dead bug" method.. In my career I've beern many things including Senior Systems Engineer but I still like getting my hands dirty.
electronics free online course. Not certain about the points made but ,if anyone else wants to discover introduction to electronics courses try Letza Easy Electronics Lessons (Have a quick look on google cant remember the place now ) ? Ive heard some super things about it and my buddy got cool results with it.
I have just recently found your channel and I love it, nothing like watching real live repairs and I'm learning heaps from you. Where did you get your endless supply of donor boards from?
Thank you very much for your sharing. You remind me myself when I come up against these situations. I laughed too much with the smokes and your surprising expression! "What is doing!!" God bless you my friend!Thank you very much for your constribution to knowledge. You are incomparable!
Wow - watching this painful process made me never want to try repair a motherboard again...I guess I should thank you for that. I just don't have half the patience you have and with only 5% of the knowledge I'm better off..cheers
i appreciate your work, but before replacing the ic you have to figure out what causes its explosion, otherwise if you just replace it it will re-explode, you necessary have to undrestand the root of problem before just plug the charger and check if it works..usually you rock but you seems tooo tired, take holidays and come back with more energy to do god job dude, we all appreciate your knowledge sharing. Cheers !
Thank you for all your video's ! What I do when there is something like this (high amps / heat) is to pour some 99% alcohol on the area and see where it evaporates 1st. I use a syringe or glass dripper to dispense the alcohol in the desired location.
JIG FFS ! 'comb' over end pins connected by 'lockable swivel' to 'board sucker mount', which correctly positions and restricts their motion in the X axis, plus 'lockable chip center sucker- LCCS' for total movement prevention. Position 'adjacent side' 'opposite end pins' in the Y axis prior to LCCS lock. Solder end pins of 3 sides before 'comb swing clear' and application of hot air. DONT bother, read on. Haha.
That one really did give you the run around. Something nasty happened at the usb board and killed the ITE chip, that overloaded the buck converter so it gained a hole lol. The mix up was caused by the charger being absent, not your fault sorin
Tuomo Moller I'm not sure but ,if anyone else needs to find out about repair your computer try Saankramer Electronic Magazine System (should be on google have a look ) ? Ive heard some interesting things about it and my friend got amazing success with it.
Wow ! I am kind of disappointed how can the board work when so many components were removed and not replaced. If the board could not be fixed, I think it should be replaced and the fan not rewired unless the customer does not care about the board. Sorin you are a very good teacher and I really believe you could have done better.
Hi Sorin, great video. It seems someone plugged a USB killer into this laptop and destroyed the IC's. The USB port on the separate board was an oversight, more than likely still at fault as its where the damage must have originated. Keep it up. *edit: A link for further reading en.wikipedia.org/wiki/USB_Killer
Good job Sorin.However,when you take some components which are for protection and don't replace them,the next time something bad happens it is more probable to damage an important component which costs much more than a cap!
Należy zawsze czyścić pola lutownicze przed ustawieniem nowego EC. W przeciwnym razie resztki cyny pozostające po wylutowaniu uniemożliwiają prawidłowe wypozycjonowanie nowego elementu. ponowne wlutowywanie lepiej jest robić grotem typu mini fala. Oszczędzamy w ten sposób czas i zyskujemy pewność prawidłowych połączeń.
i have a general question. Back in the day, things ran on 3, 6, 9, 12 or 24 volts. I assume as its multiples of either 1.5v dry cells or common accumulators 12/24v? so why do manufacturers choose 19volts to power most laptops?
in 1:15:11 you should not solder those pin together Because there is one pin is Gnd & other VIN (5V) & Other one is Enable pin ... in Future you have to Replace Circuit this is Example of IC (BD82047FVJ) Active Low
In this video you were using Amtec Flux to disolder and solder 1225 ic chip, did you run out of home made liquid Flux or you thought it's better to use Amtec flux in this case? .... Keep up the good work Sorin, you are A1... IRREPLACEABLE MASTER
man that was a tricky one ! think i would have given up ! got it up and running tho...............as for the 19v thing.............hey we all been there :)
This method can only cause more damage - a thermal imaging camera is essential when starting up and first measuring whether there are dry short circuits without voltage.
Oh my god man I love you what many boards you have man I want to give you an advice work on a soft thing better for the laptops.and in all that boards take out the fans and clean them put them alone and CPU and everything like that it will be very easy to get any chip any fan any speaker any plot charger you want it will help you very much in working
In 1:12:45 why the voltage on the power supply drop when you put a load on it? .. good videos by the way i learned so much from theme even though i'm not in the repair business but i like electronics.
Because of the Ohm's Law. You can understand it by analogy to water flow. The power supply is like a pump that makes the water (electricity) flow through pipes (wires) as current by increasing the pressure (voltage) on the "+" side with respect to the ground. But the pressure is there only when the output from the power supply is "closed" (compare it to a faucet). As soon as you start drawing current from the power supply, it can no longer build up so much pressure, because there's nothing stopping the electricity from flowing (decreased resistance to ground). The more current you draw, the less pressure (voltage) will there be, and it can drop to almost 0 volts (the potential of the ground) when you short the "+" rail to ground, because now the electricity is flowing with nearly no resistance and the pressure (voltage) cannot build up.
I could be mistaken but after you had finished reflowing the first chip it looked, to me anyway, that you had bridged 2 or three contacts on the upper left (as you view the video). I could just as easily be wrong but the more I look at it the more it looks like it is bridged. You may well have spotted that off video and rectified it as we did not get another view of that chip in the remainder of the video but could that have anything to do with your board component failures? Personally I don't reflow chips using the old solder; I remove it all with desoldering braid and resolder using solder paste. It may seem longer but the trouble you had in this case it may well have been worthwhile and I consider that method a 'permanent' repair as opposed to reflowing possibly being short term in many cases.
Hi great video, I noticed what caused the smoke at the bottom right of the board. When you were moving the board towards you I noticed moving the board towards you the board was shorting out with the copper roll of tape.Hope this helps you.
Pacat de modulul USB care era bun 100% ...., lectia din video : fara improvizatii , nu inteleg de ce nu ati schimbat chipul USB ? nu are orice placa de laptop port USB cu acel cip?
hi thanks for your videos. am asking for the second time hope i get ans this time. what are are using to check if something is heating on the board and how do u do that. many thanks.
Hi papa sarpong, from what I can tell he is using Zippo lighter fluid which is kerosene unless he has filled it with something else I can't be a 100% sure hope this helps.
w w on a PSU you have 2 nodes : one for voltage and one for amps. You short the nodes first or touch both +/- together which allows you to set the amps at a minimum 1volt output. In this situation, Sorin already had voltage and the board was draining 2.47a "on short". Hope it helps and that I'm right :P
Great video, Sorin. I know it was painful and frustrating, but it was good to see a live example of an ugly fix. Despite all your best efforts to save the usb/sd card reader board, it still would not work with it installed. So improvise, like you did. Strip it out and move on. The customer will understand and will gladly accept a working machine over a dead one. You definitely deserve a break after this one.
Your abulity to keep working on such a mess is commendable. Thank you sharing this video with us. I learned a lot.
Thank you for sharing. Anybody can have a troublesome repair every now and then. You don't hide it, most people don't show when things go wrong.
Great video!
Great example on not panic when things go wrong.
I am disappointed. You did not fix then problem but only disabled part of the system and provided a workaround. I hope you did not charge the client.
@@chrisventer8494 why wouldn't he charge him? Are you mad ? Oh let me guess you are disappointed right ? Client can have dead laptop or working without one USB and SD card reader. What do you think client will choose ? Sorin spent 2 hours on that laptop to give client something and still be able to make some money. Go to work for charity with this attitude. I bet you would not be able to do anything with this laptop , people like you just come to judge others.
How you know that most people hide if its hidden?
Think its between client and the repairing tech. if some part get disabled as long as client agree,maybe he doesnt use disabled parts anyways,phone client and ask what he wants.
😅
talk about fortitude wow, thats mental changing those 2 massive chips, thats amaing repair
Thanks for the video! I like watching real life troubleshooting. I have to get caught up on your videos. I wouldn’t change a thing about your videos. It’s very honest and real.
Your channel came up after another TH-cam I was watching. I like you a lot for verbalizing your thought process as you work on it I started working on computers when punching and reading 80 card column cards was considered software. The last chip I changed was on a 7 layer board. We cut the legs off the old chip and soldered new chip to the legs. We called it the " dead bug" method.. In my career I've beern many things including Senior Systems Engineer but I still like getting my hands dirty.
What a long working time !!! But you are done it very well. Thank you Mr. Sorin.
You've enlightened me with so much electronic knowledge, thank you sir
Believe me Sorrin this one best video you have done ....
electronics free online course. Not certain about the points made but ,if anyone else wants to discover introduction to electronics courses try Letza Easy Electronics Lessons (Have a quick look on google cant remember the place now ) ? Ive heard some super things about it and my buddy got cool results with it.
Great job, i love to watch it from the beginning till the end. hard work and patience is the key.
I didn't have a chance to see it yet, just to hear your voice make me happy
thx
I have just recently found your channel and I love it, nothing like watching real live repairs and I'm learning heaps from you. Where did you get your endless supply of donor boards from?
I guess you cant do them all :))))
@@jamich1 dont bet money on it
Our Sorin is such an honest and competent man.
Thank you very much for your sharing. You remind me myself when I come up against these situations. I laughed too much with the smokes and your surprising expression! "What is doing!!"
God bless you my friend!Thank you very much for your constribution to knowledge. You are incomparable!
Wow - watching this painful process made me never want to try repair a motherboard again...I guess I should thank you for that. I just don't have half the patience you have and with only 5% of the knowledge I'm better off..cheers
This is better than Hollywood thriller:) Good job Sorin!
Its a treat to watch master working and getting success. great going Sir.
Love watching your repair videos. Just great.
i appreciate your work, but before replacing the ic you have to figure out what causes its explosion, otherwise if you just replace it it will re-explode, you necessary have to undrestand the root of problem before just plug the charger and check if it works..usually you rock but you seems tooo tired, take holidays and come back with more energy to do god job dude, we all appreciate your knowledge sharing. Cheers !
Thank you for all your video's !
What I do when there is something like this (high amps / heat) is to pour some 99% alcohol on the area and see where it evaporates 1st. I use a syringe or glass dripper to dispense the alcohol in the desired location.
Really? He's been doing that for ages.
@@thingshappen9199 new to the channel so have yet to see it.
JIG FFS ! 'comb' over end pins connected by 'lockable swivel' to 'board sucker mount', which correctly positions and restricts their motion in the X axis, plus 'lockable chip center sucker- LCCS' for total movement prevention. Position 'adjacent side' 'opposite end pins' in the Y axis
prior to LCCS lock. Solder end pins of 3 sides before 'comb swing clear' and application of hot air. DONT bother, read on. Haha.
That one really did give you the run around.
Something nasty happened at the usb board and killed the ITE chip, that overloaded the buck converter so it gained a hole lol.
The mix up was caused by the charger being absent, not your fault sorin
I appreciate the great work you are doing
1:07:09 that IC needs to be repaced by same IC missing Gate signal on that IC is not letting the laptop on , that IC cannot be bypassed
with your school i learned and fixed a lot thank you
This is dramatic one best video you have done ...
If you were to be a chinese, i'll call you MASTER because that simply who you are. You make it so easy and explicit enough.
Thanks u Master , I have fixed many laptop because of you, so thanks you so Much.
Wow amazing video so much to learn from it.
Thx again
Really properly hard job :) Good work. Thank you for the video.
Tuomo Moller I'm not sure but ,if anyone else needs to find out about repair your computer try Saankramer Electronic Magazine System (should be on google have a look ) ? Ive heard some interesting things about it and my friend got amazing success with it.
We need schematics...this is great work on the motherboard Mr. Sorin.
Sorin , you are still the best: It’s lunch time,!!!
What is that fluid / pasta that he's pouring over those chips ? @14:24
48:56, You can solder the chip with soldering iron, but only 2-3 or 4 pins to fix the chip in position. Then you can use hot air gun.
You are a legend
Good work Sorin!
I’m holding my breath while I’m looking into the video
What a strange faults, you well done big thumb up
Best ever school repair episodio
Wow ! I am kind of disappointed how can the board work when so many components were removed and not replaced. If the board could not be fixed, I think it should be replaced and the fan not rewired unless the customer does not care about the board. Sorin you are a very good teacher and I really believe you could have done better.
Synopsis: old man yells at ITE chip for twelve minutes
Excellent Sorin keep them coming
I like your teachings i wish i can learn a lot from you
Excellent movie Just like this identify your method to search for and find the source of the problem
Hi Sorin, great video. It seems someone plugged a USB killer into this laptop and destroyed the IC's. The USB port on the separate board was an oversight, more than likely still at fault as its where the damage must have originated. Keep it up.
*edit: A link for further reading
en.wikipedia.org/wiki/USB_Killer
OK, Thanks for Video Repair Sorin!
This man is a magician.
Good job Sorin.However,when you take some components which are for protection and don't replace them,the next time something bad happens it is more probable to damage an important component which costs much more than a cap!
Należy zawsze czyścić pola lutownicze przed ustawieniem nowego EC. W przeciwnym razie resztki cyny pozostające po wylutowaniu uniemożliwiają prawidłowe wypozycjonowanie nowego elementu. ponowne wlutowywanie lepiej jest robić grotem typu mini fala. Oszczędzamy w ten sposób czas i zyskujemy pewność prawidłowych połączeń.
i have a general question. Back in the day, things ran on 3, 6, 9, 12 or 24 volts. I assume as its multiples of either 1.5v dry cells or common accumulators 12/24v? so why do manufacturers choose 19volts to power most laptops?
Electricity is not just Volts but Amperes too. Looking at a power supply that says 6V/12A may seem awkward ;)
I would say voltage drop along the path
Bravo Sorin, the battery screw is staring you right in your face and you are trying to brake the battery to take it out without removing the screw.LOL
53:00 need clean IC pins, more flux, setting few pins on side 1 and 3 with iron, then fix with hot air gun sides 2/4/1/3 in that order
Sorin , I appreciate your videos.. thanx
PATIENCE OF A SAINT
1. Easier to replace the card reader board. 2. The short could be under the connector or the card reader itself?
in 1:15:11 you should not solder those pin together Because there is one pin is Gnd & other VIN (5V) & Other one is Enable pin ... in Future you have to Replace Circuit this is Example of IC (BD82047FVJ) Active Low
i admire your patients sir, can you help me with my laptop the power light inter but, just a second and turn off , and the graphic chips hot...
VERY GOOD LESSON
Sir your great. And your tube is so organised ....good job many😊 thanks. ...
I LOVE VERY THIS FILM VERY NICELY, thank you FOR the WATCH!
It's just great.
I love every bit of the repair
In this video you were using Amtec Flux to disolder and solder 1225 ic chip, did you run out of home made liquid Flux or you thought it's better to use Amtec flux in this case? .... Keep up the good work Sorin, you are A1... IRREPLACEABLE MASTER
Thank you for the video.
man that was a tricky one ! think i would have given up ! got it up and running tho...............as for the 19v thing.............hey we all been there :)
Sir Vreg3 is 3.3 ldo or aux volt for SIO power before on, if this line is sort means either caps are sort to ground or sio sort.
could you give us some ideals on how these problems happen, are they made cheap, do people miss handle them, old age, thank you for your input. John
This method can only cause more damage - a thermal imaging camera is essential when starting up and first measuring whether there are dry short circuits without voltage.
Am doing great just watching u thank you sir
Oh my god man I love you what many boards you have man I want to give you an advice work on a soft thing better for the laptops.and in all that boards take out the fans and clean them put them alone and CPU and everything like that it will be very easy to get any chip any fan any speaker any plot charger you want it will help you very much in working
In 1:12:45 why the voltage on the power supply drop when you put a load on it? .. good videos by the way i learned so much from theme even though i'm not in the repair business but i like electronics.
Because of the Ohm's Law. You can understand it by analogy to water flow. The power supply is like a pump that makes the water (electricity) flow through pipes (wires) as current by increasing the pressure (voltage) on the "+" side with respect to the ground. But the pressure is there only when the output from the power supply is "closed" (compare it to a faucet). As soon as you start drawing current from the power supply, it can no longer build up so much pressure, because there's nothing stopping the electricity from flowing (decreased resistance to ground). The more current you draw, the less pressure (voltage) will there be, and it can drop to almost 0 volts (the potential of the ground) when you short the "+" rail to ground, because now the electricity is flowing with nearly no resistance and the pressure (voltage) cannot build up.
Damn heavy repair! Great work!
I could be mistaken but after you had finished reflowing the first chip it looked, to me anyway, that you had bridged 2 or three contacts on the upper left (as you view the video). I could just as easily be wrong but the more I look at it the more it looks like it is bridged. You may well have spotted that off video and rectified it as we did not get another view of that chip in the remainder of the video but could that have anything to do with your board component failures? Personally I don't reflow chips using the old solder; I remove it all with desoldering braid and resolder using solder paste. It may seem longer but the trouble you had in this case it may well have been worthwhile and I consider that method a 'permanent' repair as opposed to reflowing possibly being short term in many cases.
Steven Booth
I did see it also
Good morning Sorin
Whit chips like that I use to solder the corner legs by the iron, and the rest by hot air
You should get a thermal infrared camera, easy to find the hotspots. I use an Flir One for my mobile.
Is the ribon cable reversed
Hi, please check chip track you changed , for short.
Why not line up the chip and tack on just the corner pins first with the iron and then come in with the hot air., just a suggestion.
Did your second ITE chip come from a lenovo spare board or a pre burned bootloader for lenovo, new chip from ebay?
would you use inferred to see were the board heats up, or over heats, when looking for shorts?
Hi great video, I noticed what caused the smoke at the bottom right of the board. When you were moving the board towards you I noticed moving the board towards you the board was shorting out with the copper roll of tape.Hope this helps you.
thanks for your video , a very practical.
when things get complicated should be the headline. I haven't seen so many mistakes before on a laptop
cable internal short ?
He didn't change the ribbon ??
i think that you are sending current to the ground side of a capacitor. thats why it draws different current on both sides.
check how much voltage is consuming that small board and use the power source with hight curretn
hey teacher, im a big fan of your work :) where is ur store located ? :) and big thx for your sharing (from tunisia)
sorin what is the petro you use to see which component is getting hot thanks
Love your perseverance!!! Hats off to you :-)
many thanks , sir.
Maby sd card slot pins in short and bios swich get some resistants
There could be short in the io-chip. Look time 59:54 in your video there could be a short in io-chip.
I was thinking that the ribbon cable to that card reader board was reversed. maybe?
bad cable, shorted pins on cable or something metal stuck in sd card reader slot!
This is exactly what I was thinking , shorted pins on the cable.
I think this too something is in short there
morning sir watching from ksa
Pacat de modulul USB care era bun 100% ...., lectia din video : fara improvizatii , nu inteleg de ce nu ati schimbat chipul USB ? nu are orice placa de laptop port USB cu acel cip?
hello sir very nice and long work thanks a lot
Great Video From Sri Lanka
nice job sir..
hi thanks for your videos. am asking for the second time hope i get ans this time. what are are using to check if something is heating on the board and how do u do that. many thanks.
Hi papa sarpong, from what I can tell he is using Zippo lighter fluid which is kerosene unless he has filled it with something else I can't be a 100% sure hope this helps.
Thanks alot I will try using that to see. Well appreciated
@33 mins you raise the amps, how did you do this without raising voltage. Did you have the amps limited to start with ?
w w on a PSU you have 2 nodes : one for voltage and one for amps. You short the nodes first or touch both +/- together which allows you to set the amps at a minimum 1volt output. In this situation, Sorin already had voltage and the board was draining 2.47a "on short". Hope it helps and that I'm right :P