Beosound 9000 Laser unit replacement.

8 replies
matador
matador
BronzeModerator
2425 posts
Posted December 4, 2019 at 18:58 GMT
#2130318

Good evening guys,

I would like to ask you something. It may have been already answered but despite my search i didn't managed to gather a clear answer still valid today.

I'm seeing more and more Beosound 9000 to sell with defective laser unit but at affordable price (it seems, little under 500€). Some of them dont play, other stops after few seconds, one did have the glass panel detached but no more details… Etc…

I'm slowly becoming interested in those and have been lurking them lately. But I can't figure out which one will be a funny repair exercice and which one just a nightmare or an impossible project.

As far as i know MK1 is not advised.

Considering I will not use ML or N.Music (just AE on A.Aux) are MK2 laser unit easy to find? Are they costly? And how difficult are they to replace? Could a BS3000 Laser unit be fitted or is it a stupid idea?
And is they're some things i dont imagine I should be aware of?

To be honest that would be more for decorative purpose and A.Aux In use mostly. But I hate things that dont work and I'd like to see the CD part move and play.

Thanks to anybody who would help.

Location: Paris France

matador
matador
BronzeModerator
2425 posts
Posted December 5, 2019 at 08:56 GMT
#2130319

Thank you Weebyx,

Is there a serial number limit or something to separate early MK2 form late ones ?

Location: Paris France

WE
Weebyx
Bronze
1635 posts
Posted December 5, 2019 at 10:48 GMT
#2130320

matador43 wrote:

Thank you Weebyx,

Is there a serial number limit or something to separate early MK2 form late ones ?

I do not know that, I have taken the chance on the MK1/2/3's I have fixed :)

Some of them just need a good clean of the laser, and possible the sledge optocoupler if the sledge runs "funny"

/Weebyx

P(
peterpl (archived2)
Bronze
107 posts
Posted December 5, 2019 at 15:15 GMT
#2130321

Weebyx,

the sledge optocoupler is PCB 9 ?

How do you get there - by removing chassis top plate as in point 5 of Service Manual ?

WE
Weebyx
Bronze
1635 posts
Posted December 5, 2019 at 17:42 GMT
#2130322

Peter wrote:

Weebyx,

the sledge optocoupler is PCB 9 ?

How do you get there - by removing chassis top plate as in point 5 of Service Manual ?

Yes, perform steps 1-5, but be careful with the round disc running in the optocoupler thingy. It must not be bend or anything, I use a microfiber cloth or compressed air to remove any big dust things.

Off course with the following "on your own risk because of static electricity" warning, and so on. I have never had any issues with that though ;)

/Weebyx

matador
matador
BronzeModerator
2425 posts
Posted December 6, 2019 at 14:10 GMT
#2130323

Thanks to all those who replied,

I can see clearly now and will keep an eye on second hand adds.

All the best. 

Location: Paris France

P(
peterpl (archived2)
Bronze
107 posts
Posted December 8, 2019 at 13:28 GMT
#2130324

Weebyx,

I have opened a chassis top plate and looked at mine optocoupler, there was some dust ( see picture) but all holes in the disk were not covered

By that occasion I noticed also a battery ( see picture) which sooner or later will have to be replaced. Did you had a chance to replace battery ?

 

WE
Weebyx
Bronze
1635 posts
Posted December 8, 2019 at 14:03 GMT
#2130325

Peter wrote:

Weebyx,

I have opened a chassis top plate and looked at mine optocoupler, there was some dust ( see picture) but all holes in the disk were not covered

By that occasion I noticed also a battery ( see picture) which sooner or later will have to be replaced. Did you had a chance to replace battery ?

 

link

I have never replaced battery in BS9000. I doubt that it will need changing before the whole unit(CPU PCB) dies though.

/Weebyx

 

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