I have a Beogram 4002 that is all working properly except that the speed which the platter is turning, slows down and speeds up on occasion after playing fine for 15 minutes or so. Sometimes it will correct itself but other times seems to stay at the same slower speed. I have put on new belts, replaced the capacitors, switched out the R15 adjustable potentiometer with one I cleaned one from another board and switched platter motors from another unit but none of these things has fixed the problem. Also I have tried adjusting the speed of the R15. I looked at the recent post on this forum by Step1 regarding the Beogram 4002 running slightly slow and tried to see if I could learn something from that. One question I have is the servo motor possibly involved here. Sorry to say, but I was a little confused if that was part of that discussion by Step1. Also Jacques mentioned in that post adjusting R1 and R2 but I am not sure where those are or if he might have meant R14 and R15. Could you let me know Jacques if you are reading this? I do have another servo motor I can put in place of the one on this table if that might be worth trying. Should I be considering cracked solder joints as well?
John