Just noticed something.......................... The lamp on the tonearm doesn't work anymore....
But the lamp itself is working (tested), and when i turn off the turntable it makes a small flash.
Tested D1,D3,D4,D9,D10 disconnecting one leg... they appears ok... conducting only one way....
Probably tomorrow will buy a replacement C8 as suggested in SM, 4x RC4559 and 1x LF353.
Others ICs are quite expensive,so better thy with the most common first.
Thanks Pio, I'll take a look later starting with diodes and caps. Meanwhile bought anotter board on Ebay, just in case....
Fabrizio
EDIT: caps were already changed yesterday with same value elecrolytics.
Hi pio1980,thanks for your help.
Red/brown have conductivity on the motor PCB. I get also conductivity on motor control PCB connector J3/pin11 to pin3 of IC4, ando J3/10 to ground. I'm understanding your suggestion?
Fabrizio
Also changing all tantalum caps didn't improve things.
Something that make me believe is the motor PCB is failing is that the platter starts spinning BEFORE the tonearm moves,just turning on the turntable. So it must be something in the logic, non in the motor itself. Also tonearm logic PCB...
HI all, got the same problem (motor spinning out of control) on my B795. In my case happened while using it had the turntable spinning regurarly but with the cartridge on UP position (during a call). So I can exlude a broken PCB track.
Few weeks ago I also recapped PSU,arm PCB and Motor PCB...