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XFX 6850 issues after card rebuild. *please help*

post #1 of 8
Thread Starter 
So bought an XFX 6850, used, re pasted it. Now it won't work, onboard video works. SO its not the system. Tried it in two other systems also. No go there either. Any Idea guys.
Thanks in advance
post #2 of 8
check tosee if the pins are bent or if you chipped the die when seating it. also if you tightened the sink too far you may have cracked it
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Ol' No Name
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post #3 of 8
Thread Starter 
I have tried it with out the cross bracket hardly tightened. I have tried with out the cross bracket. I have tried with out cross bracket and small heatsink. I have tried with out crossbracket, small heatsink, and regular heatsink "shroud". And none of these combo's work. I even tried them all with crossfiring it with another 6850. I have read elsewhere that the cross bracket is generally the issue with XFX cards but anything suggested I have tried. The card was fully functional before doing this and I have rebuilt a few of the 6850's just not any XFX cards. Thanks
post #4 of 8
I can't see the problem. When you were cleaning the old paste off what did you use? It sounds like a messed up die
Ol' No Name
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post #5 of 8
Thread Starter 
I used 91% isopropyl alcohol with coffee filters. And I used Arctic Silver 5. Someone suggested maybe the chip shorted out from the original thermal paste being on the chip itself. What do you mean by messed up "die" I'm sorry I don't follow what you mean by that. Thanks
post #6 of 8
The part where the actual circuitry and gates are is called the die. This is where all the calculations and computations occur. It may have been damaged when you cleaned the paste if you pressed to hard or if you overtightened the heat spreader for the heatsink. I would say to be safe take off the heatsink and inspect the chip. With a magnifying glass if you have one. Regarding the thermal paste being g on the chip. That's where it belongs. the job of thermal paste is to fill The gaps that would normally be filled by air between the two interfaces of the chip and the heatsink. It allows for greater conductivity compared to the air trapped in micro crevices and the like. The fact it was on the die is actually a good sign if it was other place I would be more worried.
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post #7 of 8
Thread Starter 
I don't have a magnifying glass but at any rate if it's something that specific it almost sounds like it needs to be RMA'd. Is there anything more that can be done to the card? I'm puzzled on where I should go from here.
post #8 of 8
I would check to see if the warranty excludes any physical alterations to the cards
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Ol' No Name
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