Turntable speed

[diyman]

I'm trying to repair a JVC TT101 quartz control turntable for my friend. The speed is not constant and sometimes only lock onto 78 rpm. I think probably its some capacitors in the PSU need changing. Any other ideas where to start?? Operating voltages looks okay though.

 

[jaudio]

Change the caps. If there are trimmers check those too,they might need adjusting.

 

[EC8010]

Unless you know exactly what you are doing, leave trimmers alone! At the moment you have one fault - why add more?

 

[jaudio]

Unless you know exactly what you are doing, leave trimmers alone! At the moment you have one fault - why add more?

Change the caps. If there are trimmers check those too,they might need adjusting.

first change the caps