Mac 2K Lamp PSU.  Very repairable. Suffers from component lead fracture, and burns to board. A very elegantly constructed unit and one well worth repairing.

Above. An APS from a VL2000/ 2500/ 3000 series. Common failures are in PFC stage, PWM stage and H-Bridge.

Above: Studio Beam Lamp Psu. Very repairable and calibratable and like the X-Spot supply a little tricky to work on.

Above: A 575 Lamp PSU. Common failures are H-Bridge and associated drive components.

Above: X-Spot and X-Spot Extreme Lamp PSU. Very repairable and calibratable if a bit tricky to work on.

Above: A Studio Beam / Studio Color / Studio Spot Motor PSU. Common failures are input resevoir section and final drive FETs.

Above: An APS from a VL2C. Common failures are the H-Bridge transistors and associated drive resistors, the IRF450 Fet and associated drive electronics and failure of the TO3 sockets.

Above. An APS from a VL6 mod rack. Common failures are the high voltage gate drivers associated resistors and the H-Bridge transistors.