MacBook Pro models with a 15" display

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Problem with video card

After some research, it looks like I will have to get to the motherboard and remove the old thermal paste and apply new thermal paste. My question is this - Do I have to heat up the motherboard or chips then let cool down before I apply the paste? Or can I just remove the old paste and apply new paste and put back together. Any help is much appreciated.

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Ok, thanks for the information. But why is it that some people heat up the motherboard? What is the purpose for that?

If only scraping off and re applying new paste is all I have to do, that would be an easy fix.

I am doing this on a Macbook Pro 2 Core Duo

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No heating is required. Here's our guide for applying thermal paste: How to Apply Thermal Paste

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Ok, thanks for the information. But why is it that some people heat up the motherboard? What is the purpose for that? If only scraping off and re applying new paste is all I have to do, that would be an easy fix. I am doing this on a Macbook Pro 2 Core Duo

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Sorry, I don't mean to butt in.I am wondering where you have seen people warming up the board before applying thermal paste. that is a new one for me....

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If your paste is old it might need heating but I wouldn't even use old paste.

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I use the ArcticClean stuff that iFixit lists in the "applying thermal paste" guide mayer refers to and then the Arctic Silver thermal paste after its clean. I use to use other thermal paste for a while because it was less expensive but after 4-6 months I was having to go back in and do it again. I do not have that problem with the Arctic Silver that iFixit sells.

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I appreciate any input. I have looked on youtube. I am also interested in fixing PS3 ylod which shows that you have to do the same thing as what I have to do on my Macbook Pro. They show, them cleaning (removing) the old paste, heating up the board with a heat gun or hair dryer, (even in ovens) let it cool then apply the new paste. What would be the significance to doing that. I just don't understand.

If I am not mistaken, there is a video from ifixit that shows them heating up the board with a heat gun.

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You guys are thinking of reflowing

The reason why some people would heat up the GPU (Reflow) is because it probably has separated from the logic board (this is the YLOD - basically the motherboard does not see a GPU)

If your computer is running hot, but no other issues, then yes you can just remove the older thermal paste and add a THIN layer on the GPU. If you are actually having display issues, then you may need to "REFLOW" it. Sometimes you need to reball it, other times replace the GPU, and worst case scenario replace the logic board.

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