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How to remove old, hard thermal compound from GPU die

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post #1 of 16 (permalink) Old 02-18-2019, 05:25 AM - Thread Starter
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How to remove old, hard thermal compound from GPU die

I am starting to replacing the thermal compound on all of my old computers and video cards. How do I go about removing this old, hard thermal pad from this GPU die without causing damage? I tried using 99% Isopropyl and a q-tip and it does nothing. the heatsink, I am just going to use a toothbrush, a small flat blade screwdriver, and the Isopropyl.

And let's see if anyone can guess what GPU this is!
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post #2 of 16 (permalink) Old 02-18-2019, 05:32 AM
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A blade from a utility knife. Not with the knife but by hand. A screw driver is too narrow and one edge will dig in/scratch.


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post #3 of 16 (permalink) Old 02-18-2019, 05:32 AM
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Soak paper towel with alcohol and scrape hard till it's gone.

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post #4 of 16 (permalink) Old 02-18-2019, 05:35 AM
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Quote: Originally Posted by BroadPwns View Post
Soak paper towel with alcohol and scrape hard till it's gone.
+1

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post #5 of 16 (permalink) Old 02-18-2019, 05:59 AM
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I used some of this stuff from my garage to get some Chinese qc stickers off of the back of a couple of cpus: https://www.amazon.com/Goof-FG661-Pr...words=goof+off
If you are careful where it goes and wipe up the residue with ipa you should be fine. I was scrubbing that stuff on the little resistors and stuff on the middle underside of 2 cpus and it didn't melt anything it wasn't supposed to, but you can keep it to the gpu dies if you want to be as safe as possible. Using a hard screwdriver might scratch and very slightly reduce cooling performance if the scratch has an accompanying ridge.

And I've been a slob with isopropyl alcohol on my dies for years now and it hasn't hurt anything. I wouldn't worry about ipa touching nearly anything on a pcb if it were dry by the time I powered that pcb up.

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post #6 of 16 (permalink) Old 02-18-2019, 07:09 AM
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3D Rage Pro?

Soak compound with alcohol, use razor from something like a paint scraper and gently scrape away.



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post #7 of 16 (permalink) Old 02-18-2019, 07:15 AM
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Plastic razor blades on the die or an old credit card. Use a paper towel to help soak the die in isopropyl. Mineral oil also may help loosen the thermal interface material but its a pain to clean up. Try it on the heat sink before the card to see if it even helps.

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post #8 of 16 (permalink) Old 02-18-2019, 07:47 AM
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At first, I would put it in the dishwasher and before drying apply the alcohol.
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post #9 of 16 (permalink) Old 02-18-2019, 02:17 PM
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acetone?
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post #10 of 16 (permalink) Old 02-18-2019, 02:25 PM
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The word you are looking for is "spudger". Everyone who tinkers with electronics needs to have some quality spudgers around for things like this.


https://www.amazon.com/Quantity-Spud...-1-spons&psc=1

"Spudger" is such an uncommon word that most browsers and text programs don't know it's a word, but it is. Search for it on amazon and you will probably think "oh that's what those damned things are called" just like I did.

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