Posted By: Elevator_Logic
DMC Door Board problem - 02/09/22 10:45 PM
I have a DMC-1 Door operator with a FX3 door board. The 2amp fuse is blown on it. I replaced it with a new FX3 and changed the chips over and it is doing the same issue. The fuse blows soon as the p150 and g150 are connected to the board I have all other connectors unhooked and the motor/cap wires removed from the board. The P150 and G150 connectors have 151 VDC across them when I remove them from the board. They have 108 VDC across them when I connect them to the board. The voltage is the right orientation also. I'm not sure what could be causing it. I sat the board onto cardboard to eliminate the chance anything was shorting and connected them and the fuse still blows. Should I get a third board?