Hi everyone, a little help needed. I bought a used TAZ and everything seems to be working fine except the filament gets soft before reaching the nozzle, and I realized that this was because the heat sink fan isn’t blowing. I tried turning it on with the machine’s interface to no avail, and tried the same on another print head that it came with. Then I tried powering both with a DC power supply and they worked fine. I opened up the side of the printer and 24VDC is being sent to the fan by the circuit board when it’s supposed to be on, so I don’t see where the problem is. Has anyone had a similar problem? Thanks.
Hello can you tell me which exact model your talking about is it this will help out especially if someone has experience with that model.
I would check the continuity of the wires through the harnesses. Sometimes an internal break in the wire happens, and it may get continuity in one position of the wires, but as the bed/toolhead move, that connection breaks.
Also, try connecting the fan more directly to the board itself as a troubleshooting step.
I just picked up a legacy Taz 6 last week and noticed that one of the fans had a pretty chewed up wire from being placed in its own wire clip.
Definitely check the continuity of the wire harness itself if you know the fans are operational.
I assume there’s a Marlin command to turn fans on and off as well, have you tried that as well?