Thermal Interface -Video Controller ASD Error

Question

iMac Intel 24" EMC 2134 and 2211

Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

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Lynnor @lynnor

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crwdns2931729:0crwdne2931729:0: Dzi 22, 2014

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Thermal Interface -Video Controller ASD Error

After recently replacing my GPU card and chip, I ran Apple Service Diagnostic 3S123 and discovered I have an error that states: Thermal Interface -Video Controller:G92gt (test #4) -TIM Test 75 percent Gardband-Check that CPU heatsink is properly attached, using product spec theta dh + 75 percent guard band.

Any suggestions on how to fix that? I can't find anything online about it. I don't even know where to look on my machine for that item.

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I was careful with the screws and believe I am using the correct ones. Could you take a photo of the screws I should be using if you have them handy? I want to verify I am using the correct ones.

crwdns2934271:0Dzi 24, 2014crwdnd2934271:0 Lynnor crwdne2934271:0

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mayer @mayer

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MacHale Enterprises

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crwdns2931729:0crwdne2931729:0: Dzi 22, 2014

crwdns2933897:0crwdne2933897:0

When you replaced the card and GPU did you use thermal paste? I'd also contact Brickfence and ask them the same question since they did the repair.

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crwdns2944067:02crwdne2944067:0:

I am using thermal paste and just replied it to the CPU portion again after the error/fail notice. After I reapplied it I got the same error message. Now I am wondering if it is the quality of thermal paste I'm using. I just emailed Brickfence too see what he suggest. Thanks for the suggestion and your prompt responses! I really appreciate it.

crwdns2934271:0Dzi 22, 2014crwdnd2934271:0 Lynnor crwdne2934271:0

I've seen these types of error when the wrong screws are used (or missing) from the heat sink. I'll be interested to see what brickfense suggests.

crwdns2934271:0Dzi 22, 2014crwdnd2934271:0 mayer crwdne2934271:0

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I was careful with the screws and believe I am using the correct ones. Could you take a photo of the screws I should be using if you have them handy? I want to verify I am using the correct ones. — Lynnor
I am using thermal paste and just replied it to the CPU portion again after the error/fail notice. After I reapplied it I got the same error message. Now I am wondering if it is the quality of thermal paste I'm using. I just emailed Brickfence too see what he suggest. Thanks for the suggestion and your prompt responses! I really appreciate it. — Lynnor
I've seen these types of error when the wrong screws are used (or missing) from the heat sink. I'll be interested to see what brickfense suggests. — mayer