How to repair an ATX computer power supply

In this video, using the Krauler power supply as an example, I show how to repair a computer power supply on your own. I cover the tools needed, safety precautions, how to use an oscilloscope to detect waveform faults, how to test a PWM controller, and how to use a 220‑volt light bulb for initial diagnosis. After watching, you should be able to repair an ATX power supply without problems.