yeecheng1989

'I recommend you take the bed apart again and heat up the two connectors to the sensor with a soldering iron (and add a tiny bit of solder to assure that you heated it hot enough). Melt the solder and then continue to heat it an extra 5 to 10 seconds to be sure it's very hot.' gr5 i have the same problem for my UM2 it works for me after i re-solder all 4 connectors at the back of the heated bed