Roland JC-50 schematic and board layout.
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Amplifier Discussion / Repairing a Roland JC-50
June 25, 2018, 12:42:31 PM
Trying to bring an '80's Roland JC-50 back to life. Blows both internal 4A fuses on power on, external fuse is ok.
Research indicates the output transistors and possibly the drive transistors are shorted. Have a schematic, but not 100% sure which are the responsible transistors. Can anyone point me to the right ones, so I can test and replace?
Schematic uploaded to the Schematics section.
Research indicates the output transistors and possibly the drive transistors are shorted. Have a schematic, but not 100% sure which are the responsible transistors. Can anyone point me to the right ones, so I can test and replace?
Schematic uploaded to the Schematics section.
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