How a dead GFX Card is made alive professionally

rakesh_sharma23

In the zone
How a dead GFX Card is made alive professionally.


In this article I will show you how a dead graphics card is repaired. No oven baking, no do-it-yourself type trikes, just a pure professional repairs.
Meet the victim, my old no display, dead ATI-Radeon X1650 graphics card.


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Removing the heat sink.
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Thermal compound on the chip cleaned.
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Now circuit board is installed on a BGA chip reflow machine.
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Heater head mounted properly.
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Machine in action
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Within a minute chip is out.
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There is very little space between chip and circuit board approx. 0.1mm still you can see their is dust under the chip. This dust, heat and moisture together sometimes oxides and breaks these fine connection resulting a GPU failure.
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Chip is mounted on a reballing mount.
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You can see many connection pins have gone black due to dust and oxide layer.
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Heat cleaning the chip connection terminal.
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Preparing the chip for new BGA soldering balls. Flux, 0.6mm lead free soldering BGA balls and grid.
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Some close look on BGA soldering balls
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Grid aliened, chip ready for reballing.
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Ball properly falls into place.
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All missed holes are carefully populated with a ball using a fine needle.
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Perfect. New shiny ball are in place. Looks nice
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Little heat for removal of any excise flux applied during the ball placement stage.
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Now chip is carefully placed back on the circuit and controlled heat is applied for re-soldering.
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Perfect chip re-soldering
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New thermal compound is applied and heat sink installed.
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Test system ready. Now is the time that will show whether the GPU is back to life or gone forever.
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It’s live.. Success.
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Some GTA san andreas run shows that GPU is 100% fine.


Hope you like this article.


Regards
Rakesh Sharma

Source / More Info
 
Last edited:

Rajesh345

Youngling
Nice educative article ,
From which place similar repairs are done ?
what was the expense ?
Are you working in this field?
 
OP
rakesh_sharma23

rakesh_sharma23

In the zone
So the reason gpu dies is because of dust ? this , this changes everything
Oxidation and quick change in temperature with time, sometimes breaks these fine connection. Dust increases this process.

Dust also reduces the thermal efficiency of heatsink.

This is according to my experience. what i have personally seen and fixed.
 

Zangetsu

I am the master of my Fate.
Good article for repairing dead GPU

but not everyone will have the required machines for DIY

btw u own the repair machine ?
 
OP
rakesh_sharma23

rakesh_sharma23

In the zone
Yes Only if problem is not with the chip If chip is kaput than nothing can be done.. Cos Nvidia and AMD sell their chips to OEMs only, no replacement chip is available in market.
 
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