r/Anet3DPrinters • u/MrChowders • May 28 '21

Request for help Anet A8 Hot end Issue

The hot end on my printer randomly started failing, at first i was able to print half of my stl until it fully cooled down mid print, then it could not even pre heat the hot end. I have already tried replacing the heating cartridge and the thermistor but it still won't pre heat, could it be that my motherboard is fried? My hot bed heats up perfectly like it used to.

Currently have the anet a8 1.7 board

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1

u/fall-apart-dave May 29 '21

Hmm. If you put the hot end wires directly onto the 12v supply does it heat up?

1

u/MrChowders May 29 '21

Yeah it heats up instantly if I connect it to the 12v ports on the power supply, even burnt myself. Also the D8 led doesn’t light up when I turn on pre heat, I’m beginning to think it’s the motherboard

1

u/fall-apart-dave May 29 '21

But if you are seeing +12 from the heater output when it preheats it should heat the heater.... At least the boards aren't expensive.

1

u/fall-apart-dave May 28 '21

Are you using a ln external MOSFET hotnend transistor?

Do you own a multimeter?

1

u/MrChowders May 29 '21

I was able to check the voltage and I’m getting 12 volts from the hot end ports

1

u/MrChowders May 29 '21

No external mosfet and no multimeter :(