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.