JVC TT-101 Won't Stop


The Stop button on my recently purchased QL-10 doesn't work. It worked at first after the TT warmed up, but then quit completely. I since have replaced all 37 electrolytic caps on 3 boards, but it made no difference. The power voltages are correct. The button itself is fine and shorts pins 6 and 9 of the P8 connector on the main board, but the motor doesn't stop. What could be wrong? Any particular transistor or adjustment? Please help! -Alex
safesphere
Only cable issues I've seen have been due to people soldering the wire wraps, which causes a stress point and leads to very easy breakage. 

The board headers are delicate to, as pressure on the pins will delaminate the traces.  Have to be very careful with those.  I pull them to apply hot glue underneath to reinforce them.  Doesn't help much, but I helps. 
I can refurb 2.5 SP-10MK3 in the time it takes me to do a single TT-101 right.


I have no doubt .... the pcb of the TT-101 is a real curse for the time spent looking for faults.
I think we all agree that the TT101 is fussy. That’s one way in which this hobby requires a relaxed approach. For my part, I can only thank JP for the excellent work he did on my unit.

Once JP educated me on the genesis of the issue with my TT101, I put a little space heater in my basement man cave, I set it to heat the room just enough to keep the temperature above 65 and control the humidity somewhat. I want say that I have had no problem since doing that, but wouldn't I be asking for trouble?
@lewm 

Does this mean that the TT-101 if it is not placed in a heated and dehumidified environment makes the whims like children? Wowww
Ummm.... Best-groove, what are you trying to prove? No one would contest the fact that the TT101 is temperamental.  Least of all, me. So, I don't get it.  Unless you're just trying to be funny, which is fine.

It's also a very fine sounding turntable when all is well.