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Beogram 4000 wont spin platter anymore

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filip_kbh
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Copenhagen, *Denmark
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filip_kbh Posted: Mon, Jul 17 2017 6:12 PM

Seems my trusted Beogram 4000 through many years has finally given up after playing Bolero.

Today, it simply won't spin the platter. Everything else is working. The strobo light turns on when pressing the 33 button - and the arm travels to start position and lowers when pressing the start button. The motor for the platter, however, will not spin.

I opened the deck to look for obvious candidates like a broken chord but what has attracted my attention is the capcitors.

Here is how they look today - rather burned:

And this is how they looked some years back when I was also a bit worrying about them.

Could this be the reason?

And is there a way to test them?

Any help is appreciated.

Filip

 

sonavor
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sonavor replied on Mon, Jul 17 2017 7:13 PM

Yes, you are fortunate you got as many good years that you have with the original capacitors in your Beogram 4000. After forty plus years though it is about time for a restoration. Here is a link to some Beogram 400x restorations I did a few years back. The Beogram 4000 starts on this page.  

You will likely not have to go through as many things as I did with mine but it will give you an overview of the type of things that might have to be done. The capacitor replacement would be my suggestion for the first step. Get your power supply back up to full working order and see if the platter motor can run again.

-sonavor

filip_kbh
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filip_kbh replied on Mon, Jul 17 2017 7:45 PM

Thanks - any suggestions for which types to replace them with, seeing that the original specs can't be ordered?

sonavor
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sonavor replied on Mon, Jul 17 2017 9:34 PM

Well, it costs more but I like using Beolover's 3D printed reservoir capacitor holder with modern replacement capacitors. The assembly fits right in the original holder. That wasn't available when I restored my own Beogram 4000 turntables so you can see what I did on my restoration here (towards the bottom of the page). 

A lot also depends on your skill and knowledge of electronics. The Beogram 4000 is a fairly complicated machine and I would not recommend it as a DIY project for someone's first restoration venture. If you have experience with such things and the right tools then it is something you can learn and be successful with.

-sonavor

filip_kbh
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filip_kbh replied on Tue, Jul 18 2017 6:40 AM

Oh, I've had it open a few times during the years for adjustments, lubrication etc. but never any electrical work. I have a friend who is rather good in electronics, so I am hoping he is willing to help. Rudy's parts (Smile) are nice - but living in Copenhagen myself, I was just hoping that I could pop by the local electronic's store - oh, well I think I'll order the set from Rudy.

sonavor
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sonavor replied on Tue, Jul 18 2017 3:49 PM

Copenhagen...You are a neighbor of Martin then (Dillen here on the forum). I am sure he can supply you with a capacitor kit and other parts you will need. I get quite a few parts from Martin for my B&O projects.

-sonavor

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