My Potterton Combi 80 loses total electrical power and seems to have a loose connection on the PCB or one of the relay switches (looks like a transparent relay), is this a common problem and is it a sign of the PCB or something else ready to pack in altogether.

Roy, April 2007

Thanks `heatdude` I have tried the connections on the PCB and the power has returned, I will keep watch on the 2 resistors that you mentioned. Im sure there was a spark/connection problem from where the resistors are situated (top left on the PCB) ..... its working just now though. Thanks again.

Roy, April 2007

its your pcb, can be repaired but doesnt always last. if you take the pcb out youll see in the top left corner theres 2 resistors, turn the board over and on the back youll be able to see where its blown, if you solder it that should get you going but sometimes theres a hole blown in it and that cant be sorted

heatdude, April 2007