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Help - Roland JC 120 no chorus

Started by painkiller, February 13, 2021, 03:13:14 PM

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painkiller

Hi to all

I have an old 1976 Roland Jc 120.
Vibrato is working - chorus not :-/
I changed all Capacitors on the PCBs - I refurbished the Switch of Vibrato / Chorus.
I checked the speaker wiring.
I really don't know what else to do -
Does someone have an idea ?

Thanks !!

Jazz P Bass

There are many different schematics on this amp model.
here is the '1982'.
See if it is close.
You need to troubleshoot the circuit.