Beosound 9000 Problem

[Beocat47]

Hi All,

My Beosound 9000 mk3 has developed an issue – it can move one or two cd’s up or down at any one time, but any more and it freefalls to the bottom, goes into standby then slowly returns to position 1.

To be clear, it can move perfectly from eg cd1 to cd3, or cd6 to cd4.  But moving from eg cd2 to cd 5 or cd6 to cd3 results in the player free-falling and loudly clattering to the bottom past cd6, followed by it going into standby and crawling back up position 1.

The unit hasn’t been heavily used, all the cd’s will play perfectly and move up & down one or two at a time with no problem; the sensors have been cleaned so not dust.

Can anyone shed light on what the problem may be-and better still suggest a solution?

Thanks for reading.

[Carolpa]

first idea, I would test it horizontal.

is it vertical free falling or are switches not set when the player slide to another position?

 

note: adjust the BS9000 to the correct setting.

[Beocat47]

Yes, I forgot to mention it’s been in vertical position on it’s stand for several years, and the ‘switches’ on the back are set correctly.

Good idea though to try it off the stand and horizontally-thanks Carolpa, will try this tomorrow and report back…

[Beobuddy]

What happens when you open the glassdoor and then go from the first to the 6th position?

Does that work?

[Beocat47]

Thanks for the suggestion Beobuddy. Tried opening the door whilst moving from cd1 to cd6…

Unfortunately the door closes before the player will move; then as per usual it falls to the bottom, goes into standby then moves slowly back to the top.

Have yet to try player horizontally-(hurt my back moving Beolab 8000’s over the weekend!), but will report back once this is done – and I’ll have a look at test modes too.

[Beocat47]

I’ve now managed to test the BS9000 whilst lying flat on the ground-results as follows:

Moving from cd1-cd2,cd3 works perfectly as expected.

Moving cd1-cd4,5,6 causes the player to overshoots by 5-10cm, but it stops and creeps back to the correct position and after a few seconds plays the cd perfectly. This differs from when in the vertical position, where it seems gravity doesn’t allow the overshoot to stop and causes the player to crash to the bottom.

Moving the player back up from eg cd6 to cd5 or cd4 works perfectly, but again moving cd6-cd3,2,1 causes the unit to go into standby as the player moves upwards, and the player then creeps back to cd1 position.

So it seems the weird behaviour continues no matter what orientation the player is in, possibly exaggerated by gravity when in the vertical position.

Any thoughts/comments greatly appreciated.

 

[Beobuddy]

It’s probably most obvious that the BS9000 looses the information about the position of the sledge. It stresses and goes into standby for a restart routine. During that starting routine the sledge moves back to the first position ignoring a possible defective or dirty tacho sensor at the big motor, which moves the sledges.
They aren’t any things a user can do. It has to be opened for further cleaning/replacement which has to be done. But I have to say that the culprit can be on both sensor(s) around the motor or inside the sledge.
The servicemode (sometimes) can tell you more about errors. So, that’s the first thing to explore.

[Beocat47]

I’ve now had a look at Test Mode 27, which gives an overview of faults.

All of the results showed “OK”, except SLG, which gave fault 30 CC sledge pos count error:
”A counter error has been registered on the signal from the sledge tacho. It is registered at 35IC2 pin 1, 44, 5 and 9.”

Additionally, I tried running Test Mode 71, but after opening and closing the glass door, the test failed as it involved the sledge being moved from position cd1 to cd6; of course the sledge then hit the bottom, went into standby and returned to position 1 before all the tests could be completed.

This is now beyond my limited abilities to fix B&O equipment, but any insights into what this might mean fault-wise would be greatly appreciated.  Here in Queensland Australia there are no longer any official dealers, which means getting old B&O equipment serviced is very difficult and expensive.  So before I go to a technician any help to narrow down the problem might allow me keep this otherwise wonderful Beosound 9000 alive for a little bit longer!

 

 

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