Printer Not working

Last time you used it successfully did you by any chance clean the nozzle with the brush just before you shut it down?

You propably have one of the nozzle heaters wires exposed near the nozzles heat block. Since the brush is brass and conductive, if you clean the nozzle while it is heating and brush one of those exposed wires you will do one of two things.

There is a resistor on the main board near the white connector on the left end. It will burn and leave you with no 12 volts. The other outcome is a now fried power supply.

Unless you can or you know someone who can surface mount solder and replace that resistor once you visually confirm it burned then you are left replacing the board. If it turns out the resistor did not burn, then I would confirm you have 12 volts from the supply by using a multimeter and placing the red lead on the leg of the white connector for the yellow wire and the black lead on the leg of the white connector for a black wire. With the machine on you should read 12 volts or so there.

I just had this issue.  The fuse , I think r271, looked fine on mine but had blown (tested by connecting the 2 points and printer finally worked).  Visual inspection may not be good enough is my point.

They are zero ohm resistors. Often used in place of fuses. You can them from mouser or digikey. You just need to match the physical size. You could even just solder the new one on top of the existing bad one.