Have borrowed a mig220 machine which has been idle for several years. Was supplied by Tecweld of Bassingstoke who seem no longer in existance. No power getting to the trigger and consequently not opening the gas valve or feed motor. The "main" relay is not pulling in. There is what I believe to be a a/c indicator lamp on the front which does not illuminate. The "other" lamp is broken. The cooling fan runs, and there is 25va/c from one of the transformers to the "control" PCB, which is made by BCE Costruzioni Elettroniche. Have no techical information or abliity to diagnose any PCB faults. Can anybody help please.