JVC TT-101 Won't Stop

@gary7
 My TT-101 has started having same issues with the stop button.

Knock on wood, perhaps the resident expert will comment.

@lewm   How is it possible to crack the pcb alone?

I think JP would agree that the most likely story is that the crack was there since it left the factory or that the PCB swells and contracts with changes in humidity, thus rendering it susceptible to cracking at areas were expansion and contraction are constrained by the many fasteners that hold the boards in position.  The latter hypothesis is consistent with my observation that it behaved differently (prior to repair) when it sat in our kitchen or a repair shop vs when it was set up in my basement audio system, where temperature is cool and air is moist.

My own TT101 came to me as part of a QL10 (TT101 chassis + plinth + UA7045 tonearm).  The whole thing was "like new" when I bought it, possibly suggesting that it had had a problem from new.  I purchased it very cheaply, described by the seller as "broken", on faith that I could fix it or find someone else to fix it.

@lewm  I have read a lot in the world of the problems that happen to this turntable and I have to note that all problems are the same and similar; maybe you were unlucky with the break of the pcb and I have not read of other cases equal to yours but never other turntables like this have had a lot of problems like the TT-101.
Turntable that sounds good (when it works) but so delicate too delicate and problematic ... it is easy to understand it by reading the defects that happen.

It’s hardly a main stream item anyway, these days or even when it was current.
on the other hand, the TT101 and its ilk are now pushing 40 years old.