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DVD1 schematic power supply needed

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Mark
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Mark posted on Sat, Jun 5 2021 8:22 AM

Hi.

This is my first post so please let me know if i hit the wrong forum.

I am currently repairing a DVD1 4621 SerNo 19294699 ItemNo 1462008

The power supply is bad, only 5V standby is working.

i located a defective reference voltage generator (?) - no reference is passed to the oscillator.

Is there any schematic available ?

Regards

Mark

IMG_5F00_1391.jpg (3024×4032) (beoworld.org)

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Keith Saunders
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Little Ann, Hampshire, United Kingdom
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Mark,

Most of the DVD1 was not designed by B&O and the Service Manual which is available is just a repair manual for changing faulty modules.

Below is an overview of the wiring from the power supply only..


Regards Keith....

Mark
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Mark replied on Sat, Jun 5 2021 2:13 PM

Hi Keith.

I have the "Service Manual" - and yes, B&O kept us short.

Does anyone have a schematic or knows who actually designed the PS ?

 

Foxtrott
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Vienna, Austria
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Hi Mark!

To my knowledge there where two generation of DVD1.  Mk I was based on a Philips mecanism and Mk II was based on a Pioneer mecanism. The type number ob your DVD1 (4621) points to a MkII/Pioneer based model, but I have no idea at all which specific Pioneer mecanism was used.

I hopt this helps.

Cheers

Foxtrott

 

"The first thing we do, let's kill all the lawyers."

William Shakespeare, Henry VI, Part 2, Act 4  

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