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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
gary7's avatar
gary7
73 posts
 
best-groove
ahhh ook no problems; but this then? It remains locked means that is that improvement?

https://www.youtube.com/watch?v=-Rqmmcms1Tc
Not sure what the improved version is. But it does start different than mine when he powered it on and pressed the 33 play button. The decimal point LED blinks several times when it powered on and then counted up to lock on 33.33 and stayed there. Wonder if it was a design change.
lewm
13,321 posts
 
I'm too lazy to look at the video you quote, but the switch for "run" or "hold" makes no change to function quality.  It only alters the read-out of the tachometer, in the ways that you have already discovered. I found the "run" display to be a bit crazy making, if you look at it for an extended period.  I like "hold"; you can see what the tt is doing at a glance.
gary7's avatar
gary7
73 posts
 
I keep mine on Hold.
totem395
390 posts
 
I always found the run and hold functions a strange function
to include and have left mine on the hold also.
gary7's avatar
gary7
73 posts
 
Question. Since the adjusting of the quick stop, as per the SM, requires using records to add weight to calibrate, would using a record weight throw this off?
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