Comment on [Troubleshooting] It's the clog guy again - temp readings are bad!
ShepherdPie@midwest.social 6 months ago
One thing you’re overlooking here is the connection between the hot end and the control board. Perhaps a ribbon cable has gone bad and one of the wires inside is on the verge of snapping completely in two? This would cause inaccurate, high resistance values giving you a lower nozzle temperature as well as give you intermittent and worsening issues. You could just swap it out or use a multimeter to check the resistance from one end of the ribbon cable to the other.
Frankly I’m impressed you’ve managed to troubleshoot this far. Just normal/common printer issues often cause me to step away from printing for months at a time due to the frustration.
papalonian@lemmy.world 6 months ago
The Neptune 3 is a ghetto ass printer that doesn’t have a hotend control board. Haha. There are separate wires for the heat cartridge and thermistor that run all the way from the unit to the printers motherboard under the bed. Since I’ve swapped thermistors multiple times, I’ve more or less confirmed the connection is good.
Me too! Haha. I would normally have long given up, but I’m DM’ing a DnD game, and not being able to print out minis, terrain, obstacles etc is actually having a larger-than-I’d-like effect on things.
Damage@feddit.it 6 months ago
Are you saying that the wire is all in one piece from the thermistor to the board, with no other connectors in-between? Meaning that replacing the thermistor also replaces the whole wire?
papalonian@lemmy.world 6 months ago
Precisely, I’ve seen a lot of printers have a control board on the hot end to which the heat cartridge and thermistor are connected, with a ribbon cable running from the hot end control board to the main motherboard.
My printer does not have this secondary control board. There is a 1.5m wire running from the thermistor all the way to the main motherboard, same as the heat cartridge. Replacing the unit means replacing the entire connection, from unit to motherboard
Damage@feddit.it 6 months ago
You could also have a thermistor with a connector on the wire near the toolhead, even if you don’t have a toolboard. Old E3D thermistors had only about 15cm of wire attached to them.