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If the printer is restarting when the printhead raises above room temperature, it's possible that you have some sort of short in your heater. Has anything been disassembled recently? Is the back flap of your fan shroud (if you have a back flap on it) cutting into your heater cartridge?
Does whether or not the heated bed is on have any impact on whether or not the printer is rebooting?
If you unplug the power supply from the printer and the wall, does the blue light on the power supply go off immediately, or does it stay on for a while? It should stay on for a while; if it goes off immediately, then your power supply isn't behaving normally.
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If the printer is restarting when the printhead raises above room temperature, it's possible that you have some sort of short in your heater. Has anything been disassembled recently? Is the back flap of your fan shroud (if you have a back flap on it) cutting into your heater cartridge?
Does whether or not the heated bed is on have any impact on whether or not the printer is rebooting?
If you unplug the power supply from the printer and the wall, does the blue light on the power supply go off immediately, or does it stay on for a while? It should stay on for a while; if it goes off immediately, then your power supply isn't behaving normally.
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