Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: painkiller on February 13, 2021, 03:13:14 PM
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 !!
There are many different schematics on this amp model.
here is the '1982'.
See if it is close.
You need to troubleshoot the circuit.