Did you by any chance spin the fan with the compressed air? As tempting as it is to do, you should avoid it cause doing so can turn the fan into an electric generator and send voltage to a place that is never meant to receive it.

Modern components should have protection against this, but sometimes companies cheap out. Regardless, even if you didn’t do this, I hope this comment helps at least one person.

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Can’t forget all that cat hair to reinforce the dust.