Bench Journal

Sequential Circuits Prophet-5 Rev 3.3 Restoration and Repair

Sequential Circuits Prophet-5 Rev 3.3 Restorati...

A complete restoration of a Sequential Circuits Prophet-5 Rev 3.3 including power supply rebuilding, keyboard restoration, CPU fault diagnosis, filter envelope repair and full calibration.

Sequential Circuits Prophet-5 Rev 3.3 Restorati...

A complete restoration of a Sequential Circuits Prophet-5 Rev 3.3 including power supply rebuilding, keyboard restoration, CPU fault diagnosis, filter envelope repair and full calibration.

Marshall JVM410H Re-Bias and Servicing

Marshall JVM410H Re-Bias and Servicing

Re-biasing and cleaning/servicing of this beast of a Marshall tube amplifier.

Marshall JVM410H Re-Bias and Servicing

Re-biasing and cleaning/servicing of this beast of a Marshall tube amplifier.

Vox AC15 Fuse Failure Diagnosis and Repair

Vox AC15 Fuse Failure Diagnosis and Repair

A Vox AC15 came into the shop after complaints of fuse failure.  This article documents the diagnostic, repair and final testing process of the amplifier repair.

Vox AC15 Fuse Failure Diagnosis and Repair

A Vox AC15 came into the shop after complaints of fuse failure.  This article documents the diagnostic, repair and final testing process of the amplifier repair.