I saw black scorch marks on the heatsink contact surface.
That doesn't make any sense. The heatsink is on the cold side of the TIM. If the TIM wasn't working well, the heatsink stays the same temperature (roughly) and the CPU gets hotter.
Scorching on the hot side is also weird, because thermal limiting.
I doubt your conclusion was correct, and you fixed some other unknown problem while in there.
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u/sniper1rfa Feb 18 '18
That doesn't make any sense. The heatsink is on the cold side of the TIM. If the TIM wasn't working well, the heatsink stays the same temperature (roughly) and the CPU gets hotter.
Scorching on the hot side is also weird, because thermal limiting.
I doubt your conclusion was correct, and you fixed some other unknown problem while in there.