Have you taken the logic board out yet? If not I would start off by doing that and then clean the dust buildup using a small soft paint brush to scrub the surfaces and then a can of can’ed air blowing way the debris from the case, fans & logic board.
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Next I would remove the heat sinks no both the CPU & GPU cleaning off the old thermal paste and applying a fresh coat. More often than not this is all that’s needed.
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Next I would remove the heat sinks do both the CPU & GPU cleaning off the old thermal paste and applying a fresh coat. More often than not this is all that’s needed.
Cooking your logic board wont really fix things. At best it will just buy you sometime.
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As your GPU is part of the main board a hot air rework station would be the better approach if you have access to one.
Have you taken the logic board out yet? If not I would start off by doing that and then clean the dust buildup using a small soft paint brush to scrub the surfaces and then a can of can’ed air blowing way the debris from the case, fans & logic board.
Next I would remove the heat sinks no both the CPU & GPU cleaning off the old thermal paste and applying a fresh coat. More often than not this is all that’s needed.
Cooking your logic board wont really fix things. At best it will just buy you sometime.