Dedicated PSU has the power cable going into the terminals as they are labeled. Green into ground (symbol), white into "N", black into "L". I have heard of the problem in other situations, I suppose i should have recognized it. I remember using a 3-prong to 2-prong converter being a solution, but that didn't help (i just disconnected the ground at the supply end). The RUMBA now resets when i plug in or unplug the usb cable, so something changed.
I wasn't clear on if you thought putting the mains ground into DC -V was a cause or a solution, I can try that too. And I keep testing the ATX PSU... still working.
I wasn't clear on if you thought putting the mains ground into DC -V was a cause or a solution, I can try that too. And I keep testing the ATX PSU... still working.