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Beogramm 2000 belt issues

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Paintedpete
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Paintedpete Posted: Mon, Oct 9 2017 10:14 AM

Hi there. I'm pretty new to the group and have recently purchased a beogramm 2000 and a beolab 1700 as my first real set up.

It has been running fine and I've replaced the belt a few weeks back. Now I've come to use it and the belts off.

I've tried and tried to put the belt back on without rolling the belt to no luck it keeps coming off.

I was just wondering if you guys had any tips or tricks you'd like to share with a young starter. 

Cheers guys

Dillen
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Dillen replied on Mon, Oct 9 2017 8:12 PM

Which version of Beogram 2000 (1970s or 1980s or the 4-digit type number found on the serial-number label)?
Round belt or flat belt?

Martin 

Paintedpete
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Hi mate it's a round belt and I think of memory serves me correctly it's 5204 model that's written on the turntable

Dillen
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Dillen replied on Tue, Oct 10 2017 4:30 PM

1970s
https://www.beoworld.org/prod_details.asp?pid=279
(uses a round belt) 

or

1980s
https://www.beoworld.org/prod_details.asp?pid=280

(uses a flat belt) 

If the round belt version - have you undone the transport safety screws?
The belt will typically fall off if run without losening the screws. 
If screws are checked and fine, - are you using a correct belt?
Many of the belts sold on Ebay and the likes are useless. 

Martin

Hiort
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Hiort replied on Tue, Oct 10 2017 5:00 PM
Maybe stupid question but I would be interested to understand when a belt has to be changed other than for the obvious reasons (belt broken).

What are the typical symptoms?

 

 

 

 

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Dillen
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Dillen replied on Tue, Oct 10 2017 5:15 PM

Belts often wear to a smooth surface, losing friction, causing them to slip on the motor pulley.
This gives an amount of speed deviations (wow) as they run.
Sounds dreadful.

The round belts usually also stretches with age as they lose their elasticity, also causing wow.

Occasionally a belt stretches to a point where it simply falls off.

If a deck stood for a very long time unused, a belt may have deformed to adapt the shape of the position it has been sitting in ("memory effect")
- this is most often seen in tapedecks.

Depending on the rubber formulae etc. a belt may also crack from becoming hard and brittle - or become soft and gooey, leaving a mess very
difficult to clean off.

Martin

Paintedpete
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It's the 1970s model. It's been working fine for weeks after I changed the belt due to its age and basically had started to crack. Then I came to use after a week or so and the belt was off and will not stay on. I've ordered a service manual as I'm a bit of a novice but I'm really baffled as to why it won't stay on. I've tried to source a belt but only eBay comes up 

Dillen
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Dillen replied on Tue, Oct 10 2017 9:56 PM

I list correct belts on Ebay occasionally, and I hope this wasn't a belt you got from me, because then the problem is with your Beogram and not the belt.
These belts need to have very special properties, particularly regarding elasticity and friction - no standard belt will work, even if it looks about the
right size.
As far as I know, I am the only one to have made exact reproduction belts for these decks, so I think it's safe to say, that unless you got it from
either an old B&O dealer who happened to have an original belt - or me, it won't be correct and cannot be guaranteed to function correctly.

Martin

Paintedpete
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Do you have a link I can purchase one off of your self if possible.? Many thanks 

Dillen
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Dillen replied on Wed, Oct 11 2017 1:45 PM

You can find it here:

https://beoparts.com/category/reproduction-parts/

Use the contact form.

Martin

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