Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Preamps and Effects => Topic started by: Phil_Pop on April 08, 2019, 09:25:11 PM
I friend sent me a Roland JC-120G with only one working channel, I fixed the bad channel "just a blown fuse" I also notice
what sounds like an AM radio coming from the speakers when the EFF Board is installed in the amp.
Does any one have a schematic for the EFF board? the AMP serial number is Z9G1267.
Looks like the EFF board's number is E74366.
Sounds like the effects board is picking up and amplifying stray RF signals. Is the board properly grounded?