I have spent a bit of time in the manual but I'm sleep deprived now. I'll give it another try later.
The dropping of the arm appears to be controlled with a solenoid. First I would suggest verifying that the solenoid and the associated linkage can move freely. If nothing is binding, monitor the voltage across the solenoid coil. It should change when the arm rises or drops.
Stevelocks3 wrote:Hi Phil
Having dismantled the 4002, I fitted the new belt (just about ok but maybe overlong), linked up my new cable, DIN to phono, and put on an LP. All fine for 2 minutes. I tried another LP and the arm would not lower! It moves back and forwards but won't drop automatically or when the lowering tab is pressed. There is no manual option so I guess the fault must be electronic. I tried again 2 days later with the same result, darn it! The lateral movement tabs work.
Do you have any suggestions? or does anyone?