New fan and thermistor aren't working
New fan and thermistor aren't working
Long story short, I scored a makergear M2 pre-2015 model with the Z motor mount broken off. I ordered a new motor mount and ran the M2 Quick Start guide. I leveled the bed and the bed heated fine. However it wasnt reading the printer head as heating up. After confirming the head was hot, I figured the thermistor was broken. I also noticed the upper fan wasn't working so I ordered a new thermistor and a new fan. I should have checked the voltage! The new fan or thermistor doesnt work. I have no voltage going to FAN 0 or HEAT 0 connection. I cant seem to find a wiring schematic to tell me where to start looking. I'm not sure what other info ya'll need from me but any help would be most appreciated!
Re: New fan and thermistor aren't working
Follow up:
After checking it with the printer head heating up, I have voltage to HEAT 0 but I still can't get the thermister to read. HEAT 0 varies wildly between 9 and 14 volts. M2 Quick Start doesnt see the Heat Extruder as heating up but it is hot. Still no voltage to FAN 0.
After checking it with the printer head heating up, I have voltage to HEAT 0 but I still can't get the thermister to read. HEAT 0 varies wildly between 9 and 14 volts. M2 Quick Start doesnt see the Heat Extruder as heating up but it is hot. Still no voltage to FAN 0.
Re: New fan and thermistor aren't working
You're not likely to get a good voltage reading at the leads, because they are switched-ground MOSFET outputs.
What is the actual thermistor reading you're getting, and which firmware did you use?
What is the actual thermistor reading you're getting, and which firmware did you use?
Custom 3D printing for you or your business -- quote [at] pingring.org
Re: New fan and thermistor aren't working
Thermistor is reading 0. Not sure about the firmware version. Where do I check that?
Re: New fan and thermistor aren't working
You can find your present firmware version in the connection log.
If you're unsure of which version is correct, please use the firmware selector tool at firmware.makergear.com
I would also suggest you open a ticket with us at support@makergear.com
If you're unsure of which version is correct, please use the firmware selector tool at firmware.makergear.com
I would also suggest you open a ticket with us at support@makergear.com
~Jason from MakerGear
Re: New fan and thermistor aren't working
Which put a mighty yank on the cables attached to the hot end and broke the thermistor wiring.norleck wrote:with the Z motor mount broken off
Turn off the power, unplug both ends of the thermistor cable, and verify:
- Connector at the thermistor is intact / undamaged
- Continuity of each wire between that connector and the other end at the RAMBo pin header
- RAMBo pin header is unbent / undamaged
I'd expect a broken wire either at the extruder connector or inside the braid at the first nylon tie securing the cable from the extruder to the frame.