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Bake your Graphics Card in the Oven Fix " IT WORKED" - Page 46

post #451 of 748
Quote:
Originally Posted by windfire;12762010 
Someone must have asked and got answered before but I am a little lazy to go through all 45 pages to check. So, can someone explain:

--Does the high temp (300C inside the oven) affect plastic component of the card which cannot be removed, eg the plastic part of a PCIe power connector ?

--The entire card will be heated up, including the GPU, Vram...etc. In normal usage, you do not want the GPU to go higher than, say, 105C. How can it survive 300C temp without damage?confused.gif

The temp is 200C, 300C would melt everything. Yea the stickers on the back would melt due to the heat so its better to remove them.
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post #452 of 748
Quote:
Originally Posted by windfire;12762113 
The entire card would have reached thermal equilibrium with its surrounding (ie 300C environment) and so each component of the card is ~300C. So, regardless whether it is on or not, the GPU will be at or near this temp.

With no voltage flowing through the card it can take much higher temps without damage.
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post #453 of 748
The little plastic things that cover the LEDs on the back of the card might start to warp, try to remove them before baking the card. One of mine is a little distorted but it still lines up with the back panel. The PCIe power connectors won't melt.
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post #454 of 748
it worked! my 4850 would load with artifacts and crash after windows boot. Now it works without artifacts. Will let you know how long it lasts
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post #455 of 748
hey guys, my 8800 Ultra got this thing on, can i bake it without taking it off, and why not?
post #456 of 748
Quote:
Originally Posted by Frozenkex;13304722 
hey guys, my 8800 Ultra got this thing on, can i bake it without taking it off, and why not?

you need to remove it. Because it will pull the heat away from the GPU where the heat needs to reflow the solder. Also it may Warp the PCB and make it unusable forever.
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post #457 of 748
Well I suppose i can add my 8800 ultra to list of resurected vga's. It really worked.
post #458 of 748
Update:
The 8800 GT below still works perfectly. However, I took things a step farther. I modified the original BIOS so that the card runs at the stock settings of a 9800 GT EE, but with the fan always at 100%. This way the card never really gets very hot. Note that I did not actually use the 9800 GT EE BIOS as that would have caused the flash to fail.

It can play Crysis on all high for about half an hour and it only gets to about 48 C. There is a sacrifice of a few frames due to the reduced clock speeds, but I feel confident that the lower clock speeds & higher fan speed will prevent it from malfunctioning again.

8800 GT SC is 650 and 950
9800 GT EE is 550 and 900

Anytime a card fails and has to be repaired in this manner I strongly recommend slightly under-clocking the card and turning the fans up as high as possible. The expanding and contracting of the materials due to temperature is what causes the malfunction, so keeping temperatures consistently cool should prolong the life of the card.

Quote:
Originally Posted by Majestic_Lizard;11931851 
fixedfansm.jpg

Add one more success story.

I received an 8800 GT from a guy who had been playing games with the card, but with no fan on the card at all. The story is that someone else tried to clean out a computer with a high powered air hose (designed for filling up car tires) and blew all of the fan blades right off of the fan. That person gave the card to my friend. My friend used it to play games and tried compensating for the missing fan by sticking a case fan underneath the card. That didn't work and damaged the card. My friend gave the card to me. This card showed artifacting right in the BIOS and could not even boot into windows.

As the card was trash anyway, I disassembled it. Just in case the "oven-trick" actually worked I wanted the fan to be able to cool the card down. Unfortunately, after disassembling the card I found that the 8800 GT fan has a unique design; it fits into the cooler and blows air both toward the card and through the vents. Small fans I have lying around are not the right size and shape. I replaced all of the fan blades by hand with pieces of zip-tie cut to the same length as the original blades. Attached them with bonding glue.

I then baked the video card in the oven for 8 minutes at 380 degrees. I let it cool off for 30 minutes, reassembled it, and tried it out. It showed no artifacting and booted right into windows. First I tried Titan Quest, then I tried Crysis. So far, no problems. The only issue is that the repaired fan does not work as well as it did originally as the new blades are heavier and create more drag. I have to turn the fan up to 100 percent to get the card to idle at 45 - 47 C. However, as I've found from reading articles online, the original fan was not much better.

However, if anyone has a dead 8800 GT / 9800 GT reference card with the fan in tact... I'd be interested in the fan alone.

I'm going to leave the card in a system and I will leave that system on for a few days, just to see if it lasts.

Edited by Majestic_Lizard - 6/3/11 at 9:25pm
    
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post #459 of 748
Another update from previous post:
IT'S ALIVE!

Within the last month the 9800 GX2 started randomly crashing and caused my PC to reboot when using any 3d application. Sometimes the crash would happen in 5 minutes, other times it would happen in 5 hours. I searched for answers on this site and came to two possible solutions, card overheating or not enough power. Note that the GPU temps were around 55C when it would crash. I tried using another power supply that is 850W and the card did the same thing. After a little more reading I came to conclusion that the thermal pads were bad and I had a +1mm thermal pad on the SLI controller that only needed a .5mm.

After replacing the the thermal pads all is well. No more random crashes and every game is still smooth as butter. I broke in the new thermal pads using OCCT and the core temps went up to 105C! No crashes even at those temps. I'm idling at 55C atm and not going above 80C (Thermal paste and pads finally broke in). I'm not sure what my ambient temp is, I know it's over 78F/25C.

I'm on the lookout for a second GX2 that hasn't been tampered with regardless if it's working. Hopefully my luck continues.
Edited by xxpenguinxx - 6/20/11 at 10:16pm
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post #460 of 748
Whatever happened to the OP? Did he get banned?
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