Hi

A couple of days ago the hotend wouldn’t heat up and i got a couple of errorcodes/warnings in the display. The bed heats up just fine, so i ordered a new hotend parts (heater, thermistor and a new aluminum block). Changed all of this, but still the same error. I can se that the thermistor works because it changes values in the display when touching the thermistor-end. Any good ideas why the heater doesn’t heat?

  • UncleStewart@sh.itjust.worksOP
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    4 months ago

    Home, and done some measuring.

    1. measurement:
      Just started the printer: 1,24 VAC
      Preheating the nozzle: 0,00 VAC
      After error beep: 1,24 VAC
    2. measurement:
      Just started the printer: 1,57 VAC
      Preheating the nozzle: 0,00 VAC
      After error beep: 1,57 VAC

    Old heater: 13,6 Ohm
    New heater: 14,6 Ohm

    So, no power to the nozzle heater. Now, how to verify the mosfet?