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THIS, THIS is how you truely bake a gfx card - Page 2

post #11 of 18
Quote:
Originally Posted by linkin93;14648597 
Baking works just as well.

It either works or it doesn't.

It works more often if done in a more controlled fashion than baking.
Quote:
Originally Posted by mr. biggums;14648689 
the copper connections in pcb's degrade and basically brittle apart, "cooking" them basically melts the copper bits and flows them back together.

No.

Copper doesn't melt until almost 2,000F. By the time you got your card hot enough to melt copper, all the solder would have vaporized and the PCB would be ash.
Quote:
Originally Posted by redsunx;14648639 
Reconnect invisible to the naked eye solder points

Yes.
Quote:
Originally Posted by redsunx;14648639 
that fractured or broke during heavy use.

Or when the PCB was flexed too much, or because of thermal expansion and contraction.
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post #12 of 18
Thread Starter 
yes baking can work but, i have done both and reflowing with a good quality liquid flux works best i don't really like the idea of the open flame you know if you get it too hot you can impede the ability to fix or even crack the gpu.


Our boss finally bough a solder station a temp control on it i guess there are donw in the low hundreds if he bought one.

On of my successful bakes was a cheaper acer laptop mobo. I think it's still kicking around.

I would like to mention 2 things "FLUX" and "HISTORY IS DOOMED TO REPEAT IT'S SELF".

Good quality flux and a dropper or syringe is very important it helps git rid of any dirt under or around the contacts and helps the solder ad here better.

The second is you have to prevent it from happening again. there is reason it needs bake and something caused it. to properly fix it especially if selling this service to a customer is to prevent it from happening again. usually it means modding the cooling or using better thermal past on like on desktop gfx card. This is ESPECIALLY TRUE FOR LAPTOPS. What usually causes a laptop to need reflowed from what we have seen in the number of job we have fixed is heat usually caused my some crappy super thick thermal pad wich we replace with something better much better, copper discs. they look like pennys but are flat and devoid of burs or the center diameter bust be larger than the core with the bur facing down. otherwise the bur will cause a nasty air gap and air doesn't conduct heat.

this usually only the case with hot running chipsets and or mobile gfx cards mainly nvidia i don't think we only re flowed 2 ATIs and more nvidias than you can count on your hands toes.

for some while i have been wanting to get this off my chest but, i think i feel sicker giving away company secrets, so to speak. How ever this is OCN and most people are DIY.
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post #13 of 18
Thread Starter 
Quote:
Originally Posted by blameless View Post
it either works or it doesn't.

It works more often if done in a more controlled fashion than baking.



No.

Copper doesn't melt until almost 2,000f. By the time you got your card hot enough to melt copper, all the solder would have vaporized and the pcb would be ash.



Yes.



Or when the pcb was flexed too much, or because of thermal expansion and contraction.
This!^

EDIT: also the heat of the oven damages other components i know cause one GPU i fixed i had to replace a bulged capacitor and 2 other GPUS i failed to fix, the parts fell off and all the caps were super bulged.
Edited by cdoublejj - 8/19/11 at 11:14pm
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post #14 of 18
Thread Starter 
Quote:
Originally Posted by Conner View Post
Thats the way it is supposed to be done, but not many are going to do it that way.

Plus it doesn't sound as epic as "Dude I totally cooked my GPU in my oven"
true but, it's a waste of potentially good hardware. In way to those who have to work with what the have for many years, it's like burning money.
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post #15 of 18
How do you even know when to go about doing this? Is it basically "Oh boy, GFX card stopped working, time to throw it in the oven again!" or is there more to it? (new guy on the block here)
post #16 of 18
I don't have any need to reflow, but just thought of this and curious of people's thoughts. For people without a heatgun, what about something like this with a small metal pot contacting the gpu for heat transfer:

Set it up so that the pot only contacts the gpu. Place boiling water into the pot to bring it up to 100c. Let sit for 3-5 minutes. Replace water in the pot with oil that's been brought up to about 200c (temp monitored using a kitchen thermo). Let sit for 10 minutes. Then let the whole thing cool down.

Or I guess to temper it more, you could add more stages such as 50c, 100c, 150c, 200c.

Would that not work similar to the method in the OP for people without a heatgun, but who have common kitchen stuff?
    
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post #17 of 18
lol, it's the exact opposite concept of the way ln2'ers use metal pots to cool the gpu. Instead of using ln2, you're using some sort of heated liquid
    
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post #18 of 18
Thread Starter 
no the pot idea probably wouldn't work you need the heat on the solder not the core. not say heat doesn't transfer but, it's more efficient to apply the heat directly to the entire gpu. for those who don't have the equipment i think the wanted section may be of help if you post for a wanted service i know there are some good experience volt modders who have good feed back here who may be able to reflows as well.
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