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The 2013 revamp of the desktop Mac series known as the Mac Pro.

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Grinding noise still after replacing fan

This is a follow up from the post - from 14 feb —

2-3 second grinding noise on startup

I replaced the fan. I think I may have damaged one of the electrical ribbons, so the new fan didn’t work. going to see if shop can fix. But also, still have the grinding noise even though fan didn’t work. Video attached. The hammering noise is outside.

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Guess what non-moving part makes the noise.

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That doesn’t sound like a fan issue. It sounds like the speaker has an issue. Like it sounds like the startup chime is distorted.

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John Cathey 将永远感激不已
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