@dc42 Thanks - support ticket opened.

There is a small spot on the U2 regulator... I wonder if it grounded and popped the reg? I have done nothing to the printer other than change nozzles... but If I read the wiring correctly, that might have been enough to short something to ground.

Thanks

No... not when connected to USB only.

Nothing is connected to it

Hello -
Not sure what I have done here. But my board seems "dead" I've disconnected every cable from the printer, an M3D Promega, and removed the board from its' mounting.

When connecting to USB, I get 3 red LEDs lit but the PC doesn't see the board (my tablet does see it as "Generic Billboard device) but I cannot seem to get it to register as a serial port (tried Windows and Mac)

Any thoughts on what to try? or is it just toasted?