Hi all I suspect this is as long as a pice of string but hey hear goes. Iv a Chinese multiprocessor tig stic plasma new but not used it until now anyway it was dragged out to use the plasma I piped it up plugged it in and hey presto it worked for 5 mins then the Oc light came on ? Iv checked it out and nothing burnt out the thermal switch works all what apeers to happen is when triggered up the light comes on no current to torch I've removed the torch and tried the stick but when switched to stick the light comes on the only thing I can find is the relay by big capacitors clicks as the light comes on like it's switching the current off ? Switch the power off and restart all good until triggering up or switching to stick light comes on any help please