We completely replaced the machine, so the chances of the power or ethernet cable being plugged in wrong in exactly the same way on two different machines seems

We completely replaced the machine, so the chances of the power or ethernet cable being plugged in wrong in exactly the same way on two different machines seems vanishingly small. This being well over 30 years ago, I have no idea anymore whether or not we tried swapping either cable. At any rate, it was a least a day between the most recent machine replacement, which didn't seem to solve her problem, and the garlic placement. I'm sure there's a rational explanation in there somewhere...but problem solved, however it happened!