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Please help me with Beosound 9000 MKII various problems.

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matador43
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matador43 posted on Sun, Jan 19 2020 11:15 PM

Good evening to all,

I was so happy to get a BS9000 cheap today.
Well, joy lived short. After further investigations and reading on the forum I think I was too presumptuous thinking it would be easy to fix. The unit was sold as defective so all my fault…

Good news is Radio works and A.Aux can be selected. Sound control works too.
At first as soon as ou selected CD, the unit did go Standby. 

The glass door looked like stuck on the right and wobbly on the left hinge.
I tried to force opening but it resisted to the point where the glass detached itself from the metallic support.
So I completely removed the glass. I could verify the left hinge has a very lot of play. But since then the load command seems to work (not consistently but as the unit is in bad shape, can't say if its related).

The CD clamper when moved manually can display CD1 and CD2 (have not tried other slots). I even manage to get a timerand "pause" displayed. The disc did move a little bit like pushed from below but it didn't spin and i didn't notice anything else.

I was trying to release the sledge as Beobuddy recommended in another thread and also following the Service Manual but here started my fears.

1- I can't see any "big wheel" under the carriage to be rotated by hand.
2- When I look into the groove over the CD slots I can see two pulleys on each extend but can't see any wire or cable around them. As the carriage seems to move quite freely I fear parts are missing.

So now I'm wondering if I didn't buy a dead body, donor of some parts which are now missing.

I've attached some pictures below.

Please any advice or help would be greatly appreciated.

The left wobbly hinge, please notice the oval axis hole

.

The carriage below with no big wheel.

And one of the pulleys with no wire around.

Thanks for reading.

 

 

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matador43
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Work in progress…Crying

matador43
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Well, It is done.

Even if I didn't had some response in this thread (do I do something wrong? please tell me if its the case…), I'd like to thank the forum for the help it provides me through comments, tip, tricks and helpful info in other threads.

In the process i could figure out that some more pieces are missing, but it's mostly plastic covers and one spring i could replace by some twisted iron wire.

I would say it was easiest than i thought, even to put the wire back. The worst part was undoubtedly the ribbon cables under the carriage, they tend to fold out and are not easy to put back in place when you think its a vital and very fragile part of the system. One of the two metallic band/spring along the ribbon is broken but i imagine it only serve to keep the loop in shape, isn't it?

The carriage is travelling again (noisily, mostly because of the ribbon wires) and i could make him travel to the 6th slot and back.
I also saw for the first time "LOAD CD" on the display, small step again.

Unfortunately that's all for miracles for today, I'm now experiencing common symptoms of dead laser. It is a VAM1205 so it must be easy to find. I must check if by chance it could be the same in my BS3000 MK1 even if comments here are saying it is not.

But before ordering the part i need to check the whole health of the thing, so need to dig into the service mode details.

Any comments welcome.

marexy
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marexy replied on Wed, Jan 22 2020 1:43 PM

Perfect ..hapy to find one more BS9000 back to life  :)

BS9000 MK1 last models and 80% of BS9000 MK2 have same laser...VAM 12.4

that is from my experiance..i'm not expert!

so ..cost of the ( china  ) laser is 15 USD with shipping..as there is no more original ones ..an some of WWW sellers say ..that they have original laser..noup..no go ..

new-old stock is long gone..that is info from my local seller.

 

 

matador43
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Hi Marexy,

Do you mean VAM1205 is the same than VAM12.4 or CDM 12.4 ? Thank you.

 

In the meantime another problem did rise:

The claws holding the discs doesn't seems to disengage anymore. So i cannot spin the CD even with the tip of the finger, its stuck.

Any Idea?.

marexy
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marexy replied on Wed, Jan 22 2020 6:16 PM

Hi 

Yes ..its the same more or lass :)

On the PCB board or on the CD mechanism  ( plastic part with white label ) in the BS9000 can see VAM 1205 ...not 1250..that is for BS9000 MK3 or lete MK2

you have VAM 1205 .( if you do not have allready upgrade to last version of laser ) .and you need laser 12.4 type so..you have 90% chance for repair :)

 

 

matador43
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Hi,

I've been doing some search on CD transplant. Many says its a flip-flap operation.

But they also mention a plot to desolder after shipping and lots of measures against static electricity.

Can you tell me more about this two things?

Can ESD precautions be taken easily, like touching metal, wood floor, not moving etc etc?
Is it that easy to burn the mechanism while mounting or is it all this exaggerated?
I mean, I've just teared appart the whole BS9000 twice without thinking about precautions and it still "work". Is the CD more sensitive?

Finally, any other thing I will have to face or must know before going on?

Sorry for the truck of questions and thank you in advance. 

nanan
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nanan replied on Fri, Jan 24 2020 9:11 AM

Ok, I'm in Switzerland near Geneva BTW (check my last message) :) 

 

Cd lense are sensitive but you can go as long as you are aware you should touch something made of metal before and you don't wear a polar jacket or something like this during the process.

Good luck !

 

Weebyx
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Weebyx replied on Fri, Jan 24 2020 10:00 AM

matador43:

Hi,

I've been doing some search on CD transplant. Many says its a flip-flap operation.

But they also mention a plot to desolder after shipping and lots of measures against static electricity.

Can you tell me more about this two things?

Can ESD precautions be taken easily, like touching metal, wood floor, not moving etc etc?
Is it that easy to burn the mechanism while mounting or is it all this exaggerated?
I mean, I've just teared appart the whole BS9000 twice without thinking about precautions and it still "work". Is the CD more sensitive?

Finally, any other thing I will have to face or must know before going on?

Sorry for the truck of questions and thank you in advance. 

Just buy a CDM12.4 laser on ebay, and swap the laser only. It is easy, and it will work after that(if the laser you find works). No soldering blobs or anti-staic stuff to take into account.

If you look at the laser ribbon(after you have dismantled the cd mechanism, it will say "3067 EF-20". This is the CD12.4 laser. If it does not say that, then you should find a laser with the same markings.

/Weebyx

 

 

marexy
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marexy replied on Fri, Jan 24 2020 10:58 AM

Use antistatic gloves with all you do on electronic inside.

On the VAM12.4 there is no need to desolder anything at least from my experiance.

If you want to place ribbon correct, take of alu plate and set ribbon plus bottom of BS9000.

Pleace all ground wires back in plece.

 

 

matador43
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Thank you Nanan,

Yes, in the meantime, the sellers gave me the part and I manage to refit it, But thanks again for your help.
By the way if you have other spare parts I"m looking for the spring for the left hinge (the one without cogs). 

nanan:
Cd lense are sensitive but you can go as long as you are aware you should touch something made of metal before and you don't wear a polar jacket or something like this during the process.

Thats perfectly what I wanted to hear Big Smile.

Now I need to wait exchanges with China to be "quieter" to order a new mechanism.

I let you all know…

matador43
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Thank you Weebyx and Marexy,

Will check the laser ref and order accordingly.

matador43
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Hi everyone,

I'm happy to announce the BeoSound 9000 is working again. Disc spinning playing, resting as originally oriented.
Appart from some random ratling noises which I recognize as coming from the flex cable (and therefore will remains as it!) and as far as I've tested it, it works.

I must say that replacing the laser was quite a thriller: you have to push some parts to make them pop very close to other parts or thin wires which seems to be fragile. Maybe when you know what you do it's easy but when it's the first time, believe me, I'm still trying to reduce my heartbeat while writing :-)
Looking back, I've found easier to fit back the sledge motor and the wires. That said, it's not an impossible task either.

Anyway, It's working and I'm happy. Pictures will follow Wink 

matador43
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And here is the beauty !

 


striker27
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That is a very nice system...   Glad you were tenacious enough to get it working...   This sort of project always scares me!!!

 

 

Great Job

striker27
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That is a very nice system...   Glad you were tenacious enough to get it working...   This sort of project always scares me!!!

 

 

Great Job

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