..

This falls in the category of "beat it with a stick until it submits".
It's annoying not knowing /why/ something was defective, and /why/
kicking it fixed the problem -- but at least I didn't have to pay for
repairs.


And I suspect the service shop would have had more trouble
finding the problem than I did.

No, they would have set it on the bench, printed several pages
and said "no problem found, unit prints properly"
Then they would ask you, "did you have the power on?" :-)

Mikek