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Old 10-17-2021, 07:25 AM   #5
pintglass
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Join Date: Jul 2019
City & State: Congleton
My Country: United Kingdom
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Posts: 75
Default Re: DV-PF4E(UK) Power suppy repair

I do now seem to have output, the only voltage that seems low is the AL-30 all the others seem fine.
The buzzing is worse when the power supply is connected to the main board.

This text is from the service manual

When buzz sound can be heard in the vicinity of power circuit.

Check if there is short circuit on the rectifying diode and the circuit in each rectifying circuit of secondary side
and service it if defective. (D013, D014, D016, D018, D019, D1008, D1016, D1030, IC1002, IC1003, Q051,
Q053, Q055, Q056, Q058, Q1052, Q1053, Q1055)

Check if there is short circuit on the rectifying diode

Does this mean the rectifying diode's on the primary side?
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