It was the PSU... So I use a ATX PSU on the table with a lot of cable. Not nice
As The PSU is used to rigidify the chassis, is it possible to replace an ATX into the wrecked PSU ?
The interruptor and fan are not at the good place.
Before screwing around trying to hack a PC power supply into tan A2000 case I'd (in this order):
a) rebuild or replace your A2000 power supply. Replacing caps is not that tough if you're handy with a soldering iron.
b) remove the PC power supply from its case and transfer the guts into the A2000's power supply case.
c) leave the PC power supply outside of the A2000's case and just run longer wires.