Well...this is embarrassing, after all the measuring of voltages and checking of transistors the problem turned out to be the use of silicone grease on the tonearm lowering linkages and pivots when I originally restored this deck....I thought silicone grease would be a good choice, however the grease had leaked out of the pivot pins and collected on the arms and was creating enough drag to prevent the solenoid pulling in, maybe I just used too much...anyway its all been cleaned away and a light oil applied in its place....everything is now fine....and with a heavy heart the deck is on that well known auction site seeking a new home 🙁
Craig
