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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

Showing 5 responses by gibsonian

gibsonian
71 posts
 
Wouldn't it be a great thing to use the TT-101 schematic and build new PCB's that we could transfer the hard to find IC's to and then populate the rest with all new components, then place this new circuit in it's own box and connect with an umbilical cord to the motor, like the big Technics?


gibsonian
71 posts
 
Yes you would need someone with enough knowledge to design PCB properly but the making of them is easy once designcompleted, and not so expensive. 

R&R of the IC's I agree is not easy and not without risk.  Acquiring a supply of these would make this a go for me.  Calibration, service would be much simplified and these beasts would survive much longer this way.
gibsonian
71 posts
 
I'm game if there would be enough interest in such an endeavor.    We'd need a guru however. 
gibsonian
71 posts
 
Obviously circuit design and conductor geometry would have to be considered. 
gibsonian
71 posts
 
With a group buy I am sure we could get them for less than $50 each.  We would need someone to create the Gerber files for quote.
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