the part of my dead cubietruck that was getting very hot was actually its fuse!

How does a fuse fail such that it's burning hot to the touch?!

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@joeyh
If the current is above the rated current but still below the tripping current. The heat builds up until, hopefully, the fuse trips.
And no, that's not a failure. It's how fuses have been working for centuries.

@attilakinali well, yes, but this fuse didn't have continuity anymore, but seemed to be generating heat

(unless it was another element near it, I lack an IR camera)

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