Incorrect temperature being reported

Amiga1200 · 2016-03-19T15:11:03.000Z

Suddenly my printer is not reporting the correct Extruder temp, at room temp it says the extruder is at 210 deg C.

I have measured the thermister and resistance is 95k Ohms.

There was an incident at the time this started with the extruder, when I thought I saw a spark, which damaged the previous sensor.

I have tried moving the temp sensor to another port, but the extruder motor stops working.

I suspect something is wrong with the Arduino board, as I have already replaced the Ramps board which did not solve the problem.

Regrads

Kevin

Arnoldas · 2016-03-19T15:26:40.000Z

Hey @Amiga1200,

What printer are you using?

Amiga1200 · 2016-03-19T15:53:32.000Z

He3D Prusa XI3

3Dscaleworks · 2016-03-19T20:53:00.000Z

Looks like a malfunction of the motherboard!