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Thinking of Learning Videocard Repair

post #1 of 8
Thread Starter 
I am, by trade, an autobody technician. I was in a bad car accident in 2009 and am unable to work on cars any longer. While in the hospital I read the CompTIA A+ cert book and passed the exam. I have done a bit of reading and testing/replacing caps seems easy enough. One pulse(Ohms)=good and constant pulse=bad. I have read up on the right way to solder on circuit boards, but the bios/gpu makes me nervous. I have a couple of GTX 280s and a GTX 660 Ti that are dead as in no video output. Is there anyone out there who would be willing to help me get all of the basics down and repair these videocards?
post #2 of 8
Your best bet is 'baking' the card, search around on Google, as its a long explanation smile.gif
     
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post #3 of 8
Thread Starter 
I have looked into that too. That isn't a solution for everything though, only cold cracks in the solder. That won't replace a bios chip, cap, or a GPU. I want to learn as much as I can.
post #4 of 8
Thread Starter 
Quote:
Originally Posted by PedroC1999 View Post

Your best bet is 'baking' the card, search around on Google, as its a long explanation smile.gif

but do you think baking would fix a no video output problem? possibly?
post #5 of 8
Actually, yes I do think it will, as thats the most common issue when people bake cards
     
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post #6 of 8
You need some pretty expensive and specialized soldering equipment and stations to do surface-mount chip replacement, especially something as huge as a GPU. For smaller chips like PLCC surface mount BIOS chips, you can use what's known as a hot air tool -- LOL, basically it's a jet of superheated air that heats the pins up on all four sides of the chip to temp that will melt the solder at the pin/board junction, then you remove the chip. You can then touch-up the solder pads on the board, adding more solder if necessary, and then use the hot air tool to heat up and re-solder the chip.

Commercial fabrication facilities that build GPU boards will usually heat the entire board up to solder melt temp and apply the GPU to the solder while the entire thing is in a melt state, then it cools and is tested. We're talking 1/10000th inch robotic precision here, there are no humans involved in soldering the GPU to the board, you'd never be able to heat the board to that temp AND position the GPU onto the solder pads accurately enough to replicate the process by hand.

It's my understanding that if you return a GPU board to a manufacturer for repair, if it's not something simple like a choke or SMD voltage regulator repair, they simply toss the board in the trash and give you another one. It would cost too much and take too long to "replace" the bad GPU chip. Be cheaper just to give you another one.

Greg
post #7 of 8
Gpu chip relpacement is hard your going to need a reflow oven and everything
Same as how places on ebay fix ps3 and xboxs
As for the caps you will have to find the broken one and find a replacement to swap out
For small ics use a dab of glue to hold them in place and a small suction tool to hold them

I baked a 5870 and it didnt work I think its the bios
post #8 of 8
Thread Starter 
I know someone who does it, but he doesn't have the time to school me. He told me a little and no, you don't NEED any expensive equipment. You heat up every joint to flow temp and used compressed air to blow the solder out of the hole, one at a time. You then tin your solder tip and dob it into place once you are ready to install the new chip. You have 10 second you can apply heat before the chips will be damaged. He said the multimeter is the most expensive piece of equipment you HAVE to have. You can also bake a card in a normal oven but it has to be prepped correctly. You use a solder foil to reset any cracked joints. They do repair the videocards you RMA, they just send you another one for customer satisfaction. They then sell those as Manufacturer Refurbished. I have done my homework, I am looking for someone who is replacing these parts. It can, and is being done. it is the testing procedures I want help with!!!
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