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Beogram CD 50, Mexico

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twomartinis
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Hi everyone,

Bumping this thread as the drive belt in my CD-50 is on its last legs. Can anyone offer proper belt dimensions? Preferably in standard naming SCY##, SCX## etc. Mine is woefully stretched and hardened or I would put the calipers on it. https://www.elliottelectronicsupply.com/square-drive-belts.html

I have fashioned a makeshift tensioner out of some teflon wire to keep her in service until I can get a new belt. The cam follower/CD spindle lift at the end is soooo slow. A re-lube is in order too, running the sled in and out feels really tight & sticky. What is a good white grease to use?

Søren Mexico
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Welcome to the forum, member Dillen ( Martin) on this forum can provide the correct belts, I have been using a silicone grease for my units

Collecting Vintage B&O is not a hobby, its a lifestyle.

Dillen
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Dillen replied on Tue, Apr 2 2019 7:20 AM

twomartinis:

What is a good white grease to use?

White lithium grease.
As the original.

Martin

twomartinis
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Thanks, anyone know the drive belt dimensions? Cross section and inside circumference? I suppose I could figure it out (or at least get close); but I'd rather have the correct information...

https://www.elliottelectronicsupply.com/square-drive-belts.html

chartz
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chartz replied on Tue, Nov 19 2019 1:44 PM

Hi everyone,

Would one of you mates have a spare Beogram CD50 IR module, sans CD controler?

If so, please send me a PM.

 

Thanks! Smile

Jacques

Søren Mexico
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Hi Jacques, I have 2 CD 50 not working, send me a pic of the IR module and I will open them to look for it. if one of them have it, I can send it with my son to Copenhagen in January, and he to you from there

Collecting Vintage B&O is not a hobby, its a lifestyle.

chartz
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chartz replied on Tue, Nov 19 2019 7:02 PM
Hi Soren, very nice of you my friend.

The module is right behind the fascia, let me find a pic.

Edit: here it is!

The module with the tin box and the brown wire.

Jacques

Søren Mexico
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Will get to it tomorrow

Collecting Vintage B&O is not a hobby, its a lifestyle.

chartz
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chartz replied on Tue, Nov 19 2019 8:02 PM
Cheers! ¡ Gracias ! Tak!

Jacques

Søren Mexico
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Sorry Jacques

 


Collecting Vintage B&O is not a hobby, its a lifestyle.

Søren Mexico
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One more sorry

 


Collecting Vintage B&O is not a hobby, its a lifestyle.

chartz
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chartz replied on Wed, Nov 20 2019 8:48 PM

Okay then, never mind 😢

Thanks for looking!

Jacques

evald
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evald replied on Fri, Nov 29 2019 2:45 PM

Thank you Søren, excellent writeup now my CD50 is as new after 10+ years in the closet.
A note on the turntable height, my service manual says adjust to 4.9 +/- 0.05 mm.
That is too much in my player, used a 4,5 mm drill bit for spacing with success.
The belt dimension is 43.5 x 1.40 mm square.

matador43
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matador43 replied on Sat, Jun 13 2020 12:00 PM

chartz:

it was all down to setting the brass piece over the big wheel. Too high and the disc won't be clamped, too low and the puck will rub on its holder!

Hi chartz,

Could you please elaborate on that brass piece to adjust ? I'm experiencing the same problem and would like to know how to fix it.


Thank you ! 

chartz
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chartz replied on Sat, Jun 13 2020 12:06 PM

Hi,

It is the brass piece that sits on the cam guide, you can’t miss it.

Jacques

matador43
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matador43 replied on Sat, Jun 13 2020 12:17 PM

Thank you for your prompt reply!

Is it the big nut on the wheel that drives the drawer ?, if so I'm unfortunate because it seems it is definitely stuck.

But I've just seen in the service manual there is an adjustment for turntable height, do you think it could be a track to follow ? 

chartz
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chartz replied on Sat, Jun 13 2020 12:24 PM
Yes that’s the one. Have you touched it? You only do when you replace the belts... have you?

This is important and a slippery belt could well be the source of your issue.

Now about the platter – if you haven’t touched it, then no, it can’t be wrongly set.

Do you know the player’s history? Has it been tempered with?

You only set it back when you have done the motor’s lubrication.

Jacques

matador43
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matador43 replied on Sat, Jun 13 2020 12:49 PM

I've not touched it, but someone undoubtedly has.
The belt was changed because there is one inside (looking good) and also the remains of the previous which I've cleaned.

I've cleaned the new belt as much as i could but i'm gonna check it dont slip though.

Could you roughly explain how that bolt connect to the clamping mechanism? I'de like to understand the path to check it all.

I know that when the cam do a full revolution it actuate a lever that elevate the black cup, rising the disc from its cradle and pushing it against the motor shaft. I now it goes to that step. But after that, I believe the disc should stay (magically, as Søren said) stuc to the top brass piece and thats where it dont.
The disc comme down with the black holder and the motor spins in the air.

Also the big nut can not allow height adjustment of the cam since his height is blocked by the little arrow shaped piece that pushes the contacts when the cam rotate.

Just trying to understand how it works…

I believe the unit as been serviced by someone with not much caution. But nothing that can be undone so far.

By the way, my unit looks more like yours than Søren's: no "garage" and the little additional PCB.

Thank for our help. 

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