While waiting for the tachodisc from Martin, I have been assessing other issues, including the arm movement. I cleaned the screw shaft, replaced the belt, corrected some stiffness in the cueing solenoid, and repaired the tonearm carriage holder (part 14) which was cracked. I was able to get good lateral movement and cueing action, and the micro sensor for arm position seems to work well.
Thanks to Martin's tip, I found that pin12 from the transformer had a cracked solder joint, so I corrected that. When I plugged in the unit and pushed the play button the arm moved to towards the center. I pressed the << button to stop the movement and then pushed play again and the arm descended. The red dot-light on the sensor arm was blinking, which didn't happen before. After about 5 seconds ,the arm raised and the power shut off. Now I can't get any power to the unit. I checked the fuse and it is good. There was no pop or other indication of fault. Is there a a reset procedure, or another issue I haven't found?
Thanks for any help or advice.
Kevin