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considering its 0 or 1 passing through the cable its pretty hard for them to go bad. No they don't go bad unless the contacts get corroded/etc which doesn't happen very often.
More often than none it just might be a bad cable and the crc errors/etc are just stacking up on the interfaces and finally the box gives up due to errors. crc errors are due to a poor cable etc which if its a poorly constructed cable can just go tits up after a while.
replace it.
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