congrats on getting the BS9000!  I would start by checking to see if adjusting the 2 small clamper arm set screws solves the problem.  If that doesn't fix it, you should replace the rocker arm, which is a very easy repair.

Leaving it as-is will scratch the tops of the CDs and may, over time, damage the clamper mechanism.

Good luck!

Hej

Thnaks :-) and with the nice blue Beolab 4500 :-)

OK thanks, That must be my to do project :-)

I bit scared  😠

Don’t be scared....

anders92240 wrote:

Hello all,

So I got my self a Beosound 9000 mk3. It is very nice mut the CD are making some noice when sliding over the CD'S.

Please have a look / hear link

I have it on a table stand and have set the 2 adjustment screws on the back to point up like the manual says.

Would I need to do what Bill answer here ? link

 

If I let it be like it is now, will that damage the system and cd's ?

 

Thank you

BR

Anders

 

The last one I had for repair that did this, had the rocker arm issue.

/forum/imported-unmapped/beosound-9000-sledge-touches-the-back-of-the-cds

Once changed, all noise was gone.

/Weebyx

Weebyx,

the rocker arm mentioned by you, when new is completely flat or it has some curve ?

Peter wrote:

Weebyx,

the rocker arm mentioned by you, when new is completely flat or it has some curve ?

It is hard to say, I actually have not compared them(a mistake i know), but the one I have here in front of me, which is detect, when laid on its back, it can "rock" a bit. 

In the thread, it is noticed that you cannot see much difference on a good and bad one, so I guess it is a small difference that makes a big difference :)

/Weebyx

I think I can add some info to this. When I removed the rocker arm from my unit I showed it to my friend who is a structural engineer. He laughed and said there was no way that part would bend in the unit after looking over the mechanicals. I purchased and installed the new part anyway and problem solved. I also compared the old to the new and didn't notice any difference.

I am now looking at another new rocker arm compared to the old defective one. They line up perfectly in all respects when on a flat level surface.  The small rubber sleeve, part # 3333022, Damper f/rocker arm, which is number 46 in the diagram in the MKIII service manual is visibly worn, but hard to notice. Upon further inspection with a magnifying glass and xacto-blade, I can see that it is torn and there is a small flap that exposes the bare metal.

My guess is that over time the metal edge of the slot on the arm that the rocker slips into cuts into the rubber and there can be some sideways movement.  This causes the torn rubber to move out of the way and expose the metal below, which is enough of a height difference to cause the mechanism to retract less than it should, and then scrape the top of the CDs.

I purchased a couple of extra rubber dampers for the future as they cost nearly nothing. I suppose one could just rotate the damper 180 degrees on its shaft and then glue the torn section (which is very small), but the part is still available.

I need to clarify a point in my previous reply. The worn damper causes the drive mechanism to retract downward less than it should, so it doesn't have enough clearance when moving between CDs.  I don't know where the contact is made that causes the clunky noise we hear.  I'm sure someone with much more experience has identified the point of contact.