dead set mustek r1001a dvd recorder

[brian ecclestone]

mains and set fuses O.K. all output voltages are low by approx 30% i.e. the 3.3v lines are about 2v suspect a diode in the secondary side of the power supply do not have a service manual or a circuit diagram are there any stock faults for this condition ? can lift one end of each diode in turn and check but my diode suspicion may be incorrect any suggestions ? THANK YOU

[jts1957]

How are electrolytics? Using your eyes: "puffed?" Using your electronic test equipment: Values & ESR's?
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[jts 1957]

thanks for your reply electrolytic capacitors show no obvious sign of distress do not have the means of testing capacitors i intend to have a closer look at the weekend once again thank you very much for you time