Try removing and re-installing the pulse jumper bars and reader unit (each end of the belt). Ensure good condition of sharp points inside shorting blocks and that there is good penetrating contact to the actual cable/wire inside the belt. Also, check your belt cuts, they must be clean, with no stray wires from the cables making contact to a neighboring cable or grounding out to structure. DO NOT JUMP OUT!!! Major safety concerns. Good Luck!