I have a stock (single extruder) TAZ 5 purchased in 2015. It has worked great until today. One print failed because the extruder stopped partway through. I’ve had problems with filament binding lately and thought nothing of it. Next print put down one layer then stopped. The motor was super hot so my initial thought was overheating. It’s hot here today. That isn’t the problem, the motor is fine.
Verify extruder stepper works: hooked to X axis and it works just fine.
Verify wires are good: checked wire resistance and wired the extruder to the X stepper on the main board, works fine.
Verify fuses: 15A fuse is good, 2x LF5A are good, verified visually and checked resistance
Conclusion: either the board is bad or I’m missing a fuse. I only checked visually, I’ll have a go at something official later. I have confirmed hooking the X stepper to the extruder output on the board does not work, the X stepper won’t move.
So what are my options? I have a single extruder, no plans to go dual. Could I make extruder 1 the primary, basically swap it with extruder 0? Anything more to verify on the board? I was hoping to find a frayed wire or something else simple but I am a bit stuck.