[KolfMAKER]

You can definitely make this work.

I am sure Steve from @soundsheavenly can help.

Can you jump in Steve?

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Thnx @matador !

They way you describe it, sounds very much the same to how I experience this.

Cloud you please share the Spotify link to this song?

Please also mention at what point in the song (minutes:seconds) you experience the ‘vibration’.

Thnx in advance

 

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Hi Laurens. Here’s some things you can check.

(1) Check the Belt: Ensure the belt is in good condition and properly seated. A worn or loose belt can cause speed issues. If the belt is old, consider replacing it.
(2) Speed Adjustment: The Beogram 1203 has a speed adjustment mechanism. You might need to fine-tune this. Use a strobe disc to check the accuracy of the speed and adjust accordingly.
(3) Clean and Lubricate the Speed Change Mechanism: Sometimes, old lubrication can cause the speed change mechanism to stick. Clean out the old lubrication and re-lubricate with a suitable oil, like sewing machine oil1.
(4) Check the Motor Pulley: Make sure the motor pulley is clean and free of any debris. Sometimes, dirt or grime can affect the speed.
(5) Inspect the Electronics: If the mechanical parts are all in good condition, the issue might be electronic. Check for any faulty capacitors or resistors that might need replacing.

There’s also a video on Youtube about fixing a slow 1203. I gaven’t fully watched it. But maybe you find something helpful.

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Thnx @jacek1313 & @Dillen

@jacek1313: did you find this info for the 8002 in its Service Manual?
(I haven’t found such info for the BeoLab 8000 in its Service Manual)

@Dillen: thanks for sharing this nuance. I understand that a multimeter in Ohm measuring mode, will measure in DC and not in AC. If so, what is the right way to measure the value for the 8000? And what should the value be (for the 8000)?

 

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Coming back to my addition.

In the meantime I have been able to solve my issue. It had nothing to do with the issue described in this thread. The cause in my case was in air gaps that created a wrong air flow resulting in vibration.
I have added what I have done to solve it in my topic (see the link in the post just above this one).

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

XX

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

With help of @spassmaker I focused on possible air ventilation/gaps. So I now changed two things since last time:

• I cleaned away every tiny bit of the left glue of the old gasket. To make sure the whole surface is smooth and straight.
• I placed brand new foam (original B&O, placement according to B&O instruction).

Also, I checked the bad woofers by gently pushing them down in the middel, and feel if there was any scratchy feeling? > There is no scratchy feeling or noise.

Result: Happy that I can say that the bad vibrations are gone. Just one remark about that. I have played a list of songs with a bit more heavy and low bass tones. All play well, but only one song keeps disturbing me a bit: Coldplay with Magic. Still, in the first part of the song, the vibration can be heard when the kick drum comes in. But the effect is much less than before, and only at high volume (75% or up). Maybe it is in the song.

 

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Thanks for your input Christian!

Interesting remarks you made. Especially the air ventilation triggered me. So I now changed two things since last time:

• I cleaned away every tiny bit of the left glue of the old gasket. To make sure the whole surface is smooth and straight.
• I placed brand new foam (original B&O, placement according to B&O instruction).

Result: Happy that I can say that the bad vibrations are gone. Just one remark about that. I have played a list of songs with a bit more heavy and low bass tones. All play well, but only one song keeps disturbing me a bit: Coldplay with Magic. Still, in the first part of the song, the vibration can be heard when the kick drum comes in. But the effect is much less than before, and only at high volume (75% or up). Maybe it is in the song.

 

Your questions

• Did you crosscheck the”bad” woofers in the”good” speaker set? > Yes, the so-called bad woofers did well in the ‘good’ speaker set.
• If you push gently the bad woofers is there any scratchy feeling? > There is no scratchy feeling or noise.

 

Question to you

• What kind of material do you use for the gasket?

(share a link if you can)

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Thanks BeoBuddy !

I agree on the ‘brittleness’. The material all over is quite vulnerable after all these years. After it happened with one screw, I put just a bit of WD40 in the other screw holes. Keeping the screw vertical and screwing slowly works quite well. Anyhow, if one screws slowly without too much of resistance, it works well.

For all other cases, it is indeed better to create new brackets/stands. I think I might also do this on my 3D printer.

===

By the way, did you see my PM to you?

 

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Excuse me for dropping in, I certainly do not want to hijack this topic.

I also have an issue with the woofer drivers of BeoLab 8000. Though I think it is not a scratching noise. In my case I have a vibration that sounds like there is something loose or damaged in the driver. I have just added my topic to the forum right here.

Can you please have a look at this and comment if you recognize this?

Thnx in advance!

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

What exactly do you want to know?

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Hi @Beauvais762

I haven’t worked with Penta’s myself, but I remember reading about issues with them. There’s a lot of info on the forum. Especially in the ‘archived forum’. Though I am currently experiencing errors accessing the archived forum. Probably a temporary issue.

One of the threads that might interesting is this one: https://archivedforum.beoworld.org/forums/p/31993/259129.aspx#259129

I remember that some of the issues with the display can be solved by replacing a capacitor on the display PCB.

Hope this helps a bit.

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

ISSUES SOLVED !

Thnx for your remarks @matador & @lesbart.

I have been cleaning the two prism sensors already at the beginning, and as described in the Service Manual. (See my first post in this thread, point 3)

Anyhow, I have been able to find out what to do. I was still in the process of re-assembling the unit. The glass door had not yet been put back. After doing that, the ‘CLEANING REQUIRED’ message was gone. Obviously quite logical.

Thanks again for thinking with me. All issues are now solved.

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Update

Today I received the replacement Laser Pick-Up for the BeoSound 9000, and placed it.
And the good news is, it works again!

So after all checks, tests and cleaning of lenses and mirror, it was the laser unit that did not function well.

My gratitude goes to Ralf Gerner of Gerner Electronics / Lasertrader.de who helped me pick the correct replacement parts. Great service and quick shipment.

Still one issue?

As said the BS9000 plays CD’s again, though one thing still disturbs me. Just before it starts playing the selected CD, the display shows the message ‘CLEANING REQUIRED’.

It surprises me, since the whole Laser/lenses/mirror is completely new and clean.

Questions

1. Is this maybe an old notification that has to be reset?
2. If so, how do I do that?

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Send him a PM via BeoWorld. Search by ‘beobuddy’ and you will find him.

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Ok. Do you know BeoBuddy?

Maybe you can try if he can.

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

I can recommend BeoLover, he has a lot of experience in repairing and restoring BeoGrams.

Check his website for contact details:

https://beolover.com

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

@Carljh

Thanks for this info.

I have a BeoLab 8000 that also has a problem when connected via RCA.

It sometimes does switch on (mostly not), but only when I put the input volume high.

Question

• Could this also be caused by a bad IC1?

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

I think @marexy means the ‘relay’.

@marexy: which caps do you consider suspicious?

Location: The Netherlands
Favourite Product: BeoSound 9000

[KolfMAKER]

Hi Peter, no issues with the type of foam in your speakers.

BeoLab 8000 MK I has the improved type of foam, much better resistant to temperatures caused by the internal amplifier and PSU.

So, no problem.

Location: The Netherlands
Favourite Product: BeoSound 9000

[Author]

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