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Bed temp stays at 20C

Posted by anvoice 
Bed temp stays at 20C
June 29, 2016 04:27PM
Unfortunately it seems I have to keep spamming the forum with my problems.

Symptoms: nearly constant temperature of 20C is shown on the heated bed, whether a thermistor is plugged in or not. This reading fluctuates slightly, i.e. not constant 20C. When heating the bed, whether a sensor is plugged in or not, this temp stays at 20, resulting in flamboyant overheating of the bed.

Firmware has ramps for motherboard and the heated bed thermistor enabled.

Anyone have this symptom? A fix? Thanks in advance.
Re: Bed temp stays at 20C
June 29, 2016 04:30PM
Could be the RAMPS board has a problem or the Mega has a bad pin for the bed.
Re: Bed temp stays at 20C
June 29, 2016 05:42PM
Thanks stephenrc, looks like it was a bad Mega pin, I swapped the Mega and it works now.
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