Power Supply Repair

How to repair a switching power supply like those used in DVD players, satellite receivers, VCRs ect. They are all very similar in design, if you can fix one, you can fix em all. Learn from a retired expert in the field.\r
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WARNING: RISK OF ELECTRIC SHOCK EXISTS WHEN WORKING ON ANY ELECTRONIC EQUIPMENT. UNLESS YOU UNDERSTAND SAFETY PROCEDURES AND ARE FAMILIAR WITH ELECTRICAL WORK DO NOT ATTEMPT TO SERVICE YOURSELF