>>11822189>But I think it was really just reseating the cart that fixed it.Generally this, in rare cases humidity was temporarily forming a better connection but this also accelerated corroding the connections too.
Thinking back, it made no sense to do it. If the dust buildup was so bad that you could just blow it out like that it would have to be utterly caked in dust. A fine layer over the contacts would need to be wiped off, blowing would not remove it, and that's IF the issue is dust which 99% of the time it was not.