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Hotend stopped Heating Mid 3D Print

Issue: Hotend stopped heating mid 3D Print.

Checks:

  1. Connections to Hotend - Good condition.
  2. Power to Hotend - Reads only ~5V.
  3. 3D Extruder Fan - Works properly.

Please advice.

Thanks,

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2 Answers

Is everything else working properly? Motors moving, fan etc?

What does the temperature read on startup?

In the log at the bottom of the screen, does it say “printer detected" when you plug in the printer head?

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All Motors work. Temperature reads room temperature and changes when apply a heat source. Fan works. The Printer is detected and the Software sets the temp. To desired temperature.

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There are only two things, assuming all connections are good, that would likely cause that issue. A bad heater cartridge in the nozzle, or the extruder 1 mosfet is damaged. Both can be replaced fairly easily. BoXZY sells the heater cartridges on their website. The mosfet is a IRF3205, It is located about 20mm past where the heater wires are wired into the board, directly in line with the wires, just before expansion 2.

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I will start with replacing the Heater Cartridge and then try to replace the IRF3205 mosfet. Is there a guide to do this and is there a way to test if the mosfet is not working?

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There's not a way to test the mosfet while it's installed. There isn't a specific guide for replacing the mosfet, but it's essentially identical to replacing the transistor, a cheat guide for that can be found here:

Transistor Replacement without removing board.

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I will try both and report back.

Thanks,

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I replaced the Heater Cartridge and the heating element is now working. Thanks for the Help.

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Alejandro F Cortes will be eternally grateful.
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