Issue with BeoSound 9000 Mark 3 – CD Sled Scraping

[Horst Schneider]

Hi everyone,

I’m having an issue with my BeoSound 9000 Mark 3, which I purchased second-hand.

After some time (around 10 minutes of operation), the upper arm of the CD sled seems to lower slightly. As a result, the CDs audibly scrape against the arm. If I carefully lift the front edge of the arm by less than 1 mm, the noise disappears – but only temporarily, as it reoccurs shortly after.

This issue affects all CD slots. The unit is currently placed flat on the floor and set accordingly. Previously, it was used horizontally mounted on a wall.

Years ago, I recall reading in old forums that there were capacitor issues with the MK 1. Could this be a similar issue? I’m not sure what’s causing the problem or how to fix it.

I’d appreciate any ideas or advice you could offer.

Best regards,
Horst

[billbriscoe]

The clamper arm can be adjusted to raise it back to being parallel to the top plate.  You can check the service manual or search the forum for the topic, there are a few threads on this.  It requires removing the glass lid and the top plate for the clamper arm.  Then you can access the adjustment screws.

[francoisvl]

My 9000 did the same thing, it was the what they call the “rocker arm” that was worn. There is rubber washer over part of it that wears away with age. I changed it the arm and no more scraping.

• This reply was modified 1 day, 16 hours ago by francoisvl.

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[B&O Orlando]

I believe you are describing one of two issues. Can you clarify?

Is the scaping happening when the CD is spinning? Or is the scraping happening when the sledge is moving to another CD?

Either way, please verify that the placement screws are set correctly. See page 4-7 of the owners manual (found online).

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[Horst Schneider]

The placement screws are Set correct. The scratching noise emitts when the CD is Spinning, sliding of the head ist absolutely noiseless.

Could you please Tell me which screws, number in th Servicemanual, have to be adjusted.

[B&O Orlando]

Does this sound like your issue?

• This reply was modified 1 day, 14 hours ago by B&O Orlando.

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[billbriscoe]

There are 2 distinctly different problems with different solutions.

#1 – as you describe, the clamper arm contacts the disc.  On page 4.5 of the service manual (Sledge) you see 2 screws #34.  These adjust the clamper arm.

#2 – the sledge strikes the discs (from below) as it moves from one disc to another.  The rocker arm or rocker arm damper can be replaced to cure this, or the 2 small springs that are part of Module 9122 that attach to Modules 9137/9138 need to be replaced.  These 2 small springs are what moves the sledge when you center the CD Mechanism (using the two placement screws mentioned above).

It seemed like you were describing issue #1 above, if so adjusting the set screws to get the clamper arm setup correctly seems right.  This is described on page 5.2 of the service manual (for MK3).

The rocker arm repair is described somewhere on the forum with photos if I recall.

• This reply was modified 1 day, 8 hours ago by billbriscoe.

[Horst Schneider]

that’s what it sounds like to me, seems to be the same

[Horst Schneider]

sound of scratching

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[B&O Orlando]

It does sound the same. Try the methods mentioned by Bill. In my case I had to replace the whole clamper arm (2854207) as it had physically broken due to heat and I couldn’t bend it back into shape. Old on left, new on right.

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[Horst Schneider]

I turned the two screws by about 60 degrees CCW and nothing scratches anymore. Thanks for your tips and advice.
Can I put the Beosound into diagnostic mode with a Beoremote1? … or control it directly with it? It is now connected via an NL/ML converter and it works.

 

 

[B&O Orlando]

That’s great!

You can control the BS9000 with BR One, but I don’t think there is a way to add the “Shift” command, which is required to access test modes.

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