Hotend fan issue?

The new for 2016 RostockMAX v3!
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vrenlos
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Hotend fan issue?

Post by vrenlos »

I'm suddenly having issues with the hotend fan on my RMv3. As in, if I leave it plugged in the printer doesn't advance past the firmware version screen on the LCD at boot. Unplugging the fan immediately cures the problem. I do have an e3d v6 running with the he280 pcb, and I did just do a nozzle change, but otherwise I can't figure out what changed as it's been happy for some time.

Also, if I start the machine with fan unplugged and then plug it after boot, it'll spin as normal when the hotend is activated. Any ideas?
geneb
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Re: Hotend fan issue?

Post by geneb »

You probably have something shorted out - it likely could have happened when you changed nozzles.

g.
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vrenlos
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Posts: 21
Joined: Sun Jan 01, 2017 8:49 pm
Location: Portland, OR

Re: Hotend fan issue?

Post by vrenlos »

That was my assumption - I just pulled the PCB and there seems to be a short between the hotend supply wires, though I can't immediately see anything externally bridged. Is there a schematic for the PCB anywhere? I don't see it on the git.
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