Left fan not running but facing very small bumps
Hi,
My MBP left fan stopped working, smcfancontrol shows 000rpm, I've done a SMC and NVRAM restart, but the problem remained. Then I've opened the back cover and I was able to see only the right fan working. Finally, to confirm I've run the Hardware test and got a "4M0T/4/40000002: left side-0", which seems to confirm that this is a hardware problem.
Although, with the computer opened, I was able to observe that the fan, although not spinning, it does slightly bounces, with very small bumps, let's say a bump per second, like if it was trying to spin but it couldn't. Is it normal? Is the fan really broken? Shouldn't it be completely stopped?
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Good diagnosis
originalmachead 의