Finally finished my MMU2 -> MMU3 upgrade and I don't get any response from the MMU
Hi,
This is just a reassurance post, to make sure I didn't miss something.
I upgraded my old MMU2s which was unused for a year or two to the new MMU3.
and when I switched the printer on, printer started normally but MMU did... nothing?
Not a LED blink, not a motor sound.
Support menu on the printer says MMU consumes 0.0Amps.
no error message or anything.
I also can't upgrade the firmware on the MMU, slicer just says "can't find mmu3, press reset" but that also does absolutely nothing.
So, my assumption is that the PCB is somehow broken.
Does anyone have any other ideas what i could try, or how i could make sure it's actually the MMU pcb that is the problem, and not the new "power and data" mini board from the MMU3?
Best Answer by mavu:
So, to follow up on myself in case anyone else has the problem:
I don't know why but my MMU control board did not respond in the MK4s with the latest firmware.
I had to flash the correct firmware with an icsp (usbasp) directly to the board, not via usb, and that resulted in a working MMU.
RE: Finally finished my MMU2 -> MMU3 upgrade and I don't get any response from the MMU
So, to follow up on myself in case anyone else has the problem:
I don't know why but my MMU control board did not respond in the MK4s with the latest firmware.
I had to flash the correct firmware with an icsp (usbasp) directly to the board, not via usb, and that resulted in a working MMU.