I have a Melzi v2.0. My bed temperature was reading correctly. I took the bed off to replace a bearing and now the bed reads around 275 with a little fluctuation. Removing the wires and using a resistor does nothing. I wired the bed to the etemp port and got a good reading. Pretty sure the problem is on the melzi board but is limited to the one place. How hard is it to fix or rewire with the expansion header?
