[YannChris]

Hi Martin,

I completely agree with you.

That’s why I only did short tests and don’t plan to use this hybrid solution.

By chance, once the servos and lasers were paired properly, no further issues arose.

For now, I can’t go further without the help of someone in the know.

Kind regards,

Yann.

 

 

[YannChris]

Hello Beoworlders,

Following Matador’s advice, I tested the still “functional” drive with several discs.

There is no logic in the results, as some CDs with a lot of tracks work fine and some don’t.

On a few of them, the discs is read for a few seconds then stops.

In one case on a short disc, the sound was highly distorted.

I suspect that tuning of the CDM2 laser is not adapted to the CDM4 servo board.

Any advice?

Kind regards,

Yann.

 

 

 

 

[YannChris]

Hello Beoworlders,

To Matador: I did not test a lot of CDs as I was unsure that the mix between lasers and servo boards was safe.

To all: I went further on the CD150 alternative solution and found that the grey 14 pins connector of the Beocenter’s drive is split in two separate connectors (9 + 4 pins) on the Philips one.

The last option is to send my drives to someone who is able to repair them.

Anybody interested?

Kind regards,
Yann.

[YannChris]

Hello Beoworlders,

To Martin: Sorry but I could not localize the smell.
I always carefully removed the ribbon cables using the ZIF connector on the servo board.
I agree with you, there are sharp angles on the CDM 4 and I hope that the seller took care when he recapped the unit.

To all: Today, I exchanged the laser units from one drive to another, here are my findings:

CDM 4 servo with CDM 2 Laser: plays well on an 8 tracks CD except a noise when moving to a track at the end of the CD, but does not work on a 18 tracks one. This behaviour was identical on original CDM 2 unit before the “smell incident”. See these videos:

CDM 2 servo with CDM 4 Laser: same symptom as on full CDM 2 unit after the “smell incident”. See this video:

I come to the conclusion that something is wrong on both servo boards as no perfect result is obtained.

When it comes to lasers, I suppose they are still functional, but I suspect the CDM 2 one needs some tuning and I have neither knowledge and equipment to proceed. I have no idea for CDM 4.

So “I send an SOS to the world” and would be grateful if somedy with the know-how could take over this repair. Of course, I take all the costs.

Thanks by advance and kind regards,

Yann.

[YannChris]

Thank you Martin.

The set was VERY dirty when it arrived with a lot of dust inside that I removed with a paining brush and the aluminium lids also need a deep cleaning.

What product can I use to do this?

Kind regards,

Yann.

[YannChris]

Hi MM,

Same for me.

Regards,

Yann.

[YannChris]

Hi Beoworlders,

Recieved today my Beolink 5000 updated by Pilatomic.

Great job, everything works fine!

The remote control has now a Beo4 look with the screen always on.

Regards,

Yann.

[YannChris]

Wrong post, sorry.

[YannChris]

Hi,

Thanks Peter and Chartz for your informations.

As I am not particularly skilled with my hands, I’m not very confident in swapping the idlers.

Chartz, I understand what you mean, but I don’t see how to identify which idler is the loudest and how / where to put it.

I think it’s more sensible to digitize my tapes first and will update this thread once done.

Thanks again,

Yann.

 

 

 

 

[YannChris]

Hi Beoworlders,

That’s it, my BL 8000 are now finished:

After an extensive cleaning following Matador’s tutorial:

-New damping material placed,

-Foam tape exchanged with Beobuddy’s supply,

-Bushings of the main transformers exchanged by new ones supplied by Beoparts (part number RP-008 proposed for BL Penta, 3000, 4500, 5000).

They shine like new!!!

My warmest thanks to all contributors of this brilliant thread,

Yann.

 

[YannChris]

Thanks Omminp.

You were right… again 🙂

3 rubber buffers were broken in two parts, the 4th was the only still in one piece.

3 drops of loctite made the job, I feel more secure now.

While the set was opened, I took videos of the moving parts at the 3 speeds. The belt on the right side moves strangely. The set is more noisy when “closed”.

Videos are online on this playlist, if you can’t reach them just tell me: https://youtube.com/playlist?list=PL5Sdc5VmHaOJJCaNR6syj5EfxE5SZrQ_H

PS: The type stated on the schematic is 4136 50 Hz

Kind regards,

Yann.

[YannChris]

Hello Beoworlders,

Chartz and Omminp, thanks for your precious informations.

I opened the set and cleaned what I could, including the heads which seem to be OK.

I did not put oil on the idlers, as I don’t know which kind of oil to use.

The exchange of capacitors is unfortunately out of my competence.

The connection from Beocenter to the Radio input on the BC 2000 works.

I kept a connection from the Line socket to an USB soundcard and tested the recording on a laptop. Test was successful.

Good surprise, a small envelope containing the schematic is stuck inside of the bottom plastic case.

2 problems remain:

1: I cannot find how the chassis is held on the wooden frame. I found one screw on the right side, underneath the headphone jack but could not find anything on the left side.

So if I place the set vertically, the chassis tends to get out.

Unfortunately the service manual available on the old site is in German and I don’t speak this language.

2: The set is rather silent on low speed, more noisy on middle speed and supersonic on high speed.

It does not work when placed vertically.

Could a video help someone to diagnose where the defect stands?

Thanks for your help,

Yann.

[YannChris]

Hi,

Nobody to help me?

Kind regards,

Yann.

[YannChris]

Hi all,

I tested the set and bought it.

By chance, the heads are not worn out, so I can play the tapes.

But Chartz was right, idler wheels must be hard and the BeOcord sounds as a BOeing 🙂

As my project is to digitalize the tapes it is not so annoying.

By chance, the line-out works but the plug is wired in a strange way, as input and output pins seem to be reversed.

So to connect it to my Beocenter 9000, I have to fiddle with Din/RCA/Din adapters.

Tomorrow I’ll check the speaker outputs.

Kind regards,

Yann.

[YannChris]

Hello Martin,

Thanks for the info, my mistake is corrected.

Do you have any clue for the remaining problems?

Does the reading of the tork-meter tape video shows something useful?

Kind regards,

Yann.

[YannChris]

Update:

I exchanged the belt with a one bought to Dillen a few years ago but never used.

Unfortunately with no complete result : fluctuations while reading are gone but the other defects stay unchanged.

Any clue?

Kind regards,

Yann.

[YannChris]

And did the videos give you other clues?

[YannChris]

Thanks Chartz,

I just had a look and these parts are for Beocord 9000 and I have a Beocenter 9000

Are you site they are adapted to my set?

Kind regards,

Yann

[YannChris]

Thanks Chartz,
What do you mean by tyres?

Kind regards,

Yann.

[YannChris]

Thanks Omminp,

I’ll check heads very carefully when I’ll test the set.

Kind regards,

Yann.

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