Hello chaps. My first 'technical post' here! Much searching has been done, so it is now time to ask the many great experts here, I think... Background: As an avid fixer of 'old stuff', I bought this 1997 example recently, to replace my various small 'hobby migs'. It came with the declared fault of 'gas always on' and the seller's mitigating action was to replace the Euro torch. Cleaning out the gas solenoid valve sorted that issue. I then replaced all the usual consumable / wear items, cleaned all the internal spade connections, the six position voltage switch and the contactor. Fired up first time and the arc 'was not' good... a red glow. And a 'BUZZ'. Indicative of AC to DC failure? I then metered the OCV from + to - and the 1.5 amp in line fuse on the aux. transformer blew as soon as power was supplied. And continues to do so. Bugger... Any advice? Have I missed something? Cheers.