Beocord 7000 - „fully“ working, but no sound output

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69er Posted: Sat, Feb 5 2022 11:14 PM

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Hi B&O lovers,

i have a beocord 7000 in front of me, where I just replaced all belts.

Now „everything“ works again.

play, fast forward in both directions. Turn, etc.

but there is no signal coming out of the engine.

i connected it to an Ouvertüre through the aux input.

Has anybody an idea?

i never had this kind of issue.

btw: the level indicator is always on +8, meaning it doesn’t move at all.

i could guess, it’s a signal problem, maybe the head?

how would you proceed?

All the best 

69er

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Dillen replied on Sun, Feb 6 2022 8:46 AM

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Missing 8V reference voltage for the VU and Dolby circuits would be my guess.
Check C46 and C47.

Martin

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69er replied on Sun, Feb 6 2022 10:08 PM

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Hi Martin,

thank You for the fast reply.

will check tomorrow and post my result.

Best regards 

69er

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69er replied on Sat, Feb 12 2022 12:27 AM

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Hi Martin,

thank You very much !!!

it was just these two capacitors. 
I measured them with a mesr-100 esr meter, but they looked good.

i exchanged them anyhow and now a beocord 7000 in black is fully functional again.

best regards

69er