Plug not quite wired correctly.. but was not the problem…Well holes in top… turned out to be wood worm needing treatment..Inside base woodworm too..Neat Mark I board with point to point wiring no PCBNice Mulards in her look original Needed to take the chassis out to tighten the transformer mountsThe supply cap nearest us appeared to be a bit leaky and was loading the rectifier taking too much current causing the transformer to over heat and smoke… no damage to the transformerCap out and holes drilled for a new mountNew cap in place!new cap was a dual 32uF cap.. I needed to add the cathode resistor bypass cap as well (the blue one)All tested good and sounding great.. it distorts earlier than the later “Little Giant” amps but is still a great sound and pretty loud!