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Beogram 4002 tone arm not moving

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Bob Marley
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Bob Marley posted on Fri, Apr 13 2018 12:08 PM

Hi i've just got one of these untested when i press start the platter turns and stops and the tone arm does not move at all do you know what the fix could be?

 

I tried all the other buttons still tone arm not moving but it does light up.

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chartz
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chartz replied on Fri, Apr 13 2018 12:17 PM
Hi,

Perhaps you need a new carriage belt, or the pulley is broken.

Can you hear the arm carriage motor spin at all?

Have a peek inside and inspect. Pull the wooden frame towards you, then lift the alu part around the platter and the one behind the command panel. Do be extremely careful!

I like to use a thick piece of cloth around the platter not to dent it. Some 4002s do have a heavy platter.

Or carefully lift the platter first with popsicle sticks, if you have the light platter.

Jacques

Bob Marley
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I have posted a video on youtube here - 

https://m.youtube.com/watch?v=l9Ly-bCZxsE

 

I can hear something spin not sure if its the belt under the platter or a motor.

 

The items you mentioned will they be visible if i take of the platter and show photos? The platter is easy to take off just turm the deck upside down it falls out!

chartz
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chartz replied on Fri, Apr 13 2018 12:43 PM
Yes, remove the top parts the way I told you and show us please!

I can hear the carriage motor alright.

Jacques

Bob Marley
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Is the sound the carriage motor?

 

I'll get some photos later today.

chartz
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chartz replied on Fri, Apr 13 2018 12:49 PM
G7Trader:

Is the sound the carriage motor?

Yes it most definitely is.

Please use the Beoworld picture storage facility. Wink

Jacques

Bob Marley
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I will get the photos uploaded soon give me a few days I got about 4 projects going on at same time.

 

BBC LS3/5A

Technics reference VU meter bulbs

Beovox m75 refoam 

Beogram

 

And i sell vintage audio on ebay need to test and list about 50 items.

 

Below is Beovox M75 repair photos the woofers are 97% similar Seas as the ones in Beovox S75 that I had lying around:

 

Oops I can only upload files under 1MB....

 

 

 

Bob Marley
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I've put photos on my Instagram here:

https://www.instagram.com/vintage_audio_g7trader/

 

chartz
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chartz replied on Sat, Apr 14 2018 6:17 PM
Sorry, I can’t see your pictures.

What is Instagram?

Jacques

Bob Marley
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Try this URL:

https://www.instagram.com/g7_vintage_audio/

chartz
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chartz replied on Sat, Apr 14 2018 10:35 PM
Okay, you misunderstood me: I can’t see any photos of the deck’s innards!

Jacques

Bob Marley
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I was showing you photos of the Beovox M75 woofer repair.

 

But now I have uploaded photos of the inside of the beogram you can see here - https://www.instagram.com/g7_vintage_audio/

 

I have found a small belt that has been snapped on a small motor below the tone arm this sounds exact like your prediction. 

 

Is this the fix? Is this it or is there more to do?

 

I have plugged it on with it open and pressed start now the small motor stays on and the motor for the platter also stays on when i press start they do not stop. I am assuming tje tone arm has to reach the platter for next process.

 

Shall I order this belt I see a few on ebay.

 

Thanks very much for your help you are an absolute Genius! 

 

Someone once told me they had a beogram that sounded dis torted the B&O shop charged them £400 to replace the needle parts and labour but the deck sounded exactly the same!! They contacted the B&O shop again who said he would need to pay more money to find the fault!!

 

You saved me £100's.

 

On my instagram (social media site) you can also see photos of my self build BBC LS3/5A I made it for around £250, used prices on ebay are £1,000 - £2,500 based on condition. let me know if you want to make one I will show you where to get all the parts. 

chartz
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chartz replied on Sun, Apr 15 2018 7:53 PM
Hi,

No, the belts on eBay are bad (they always are).

Beoworld member Dillen has the correct type. Send him a PM.

Check that the detector arm light bulb works too. If not, replace the lamp.

That should suffice to recover normal operation.

I guess the LS3/5a parts are from Falcon, aren’t they? Wink

Jacques

Bob Marley
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Ok will ask martin.

 

Both lamps work.

 

LS3/5A parts are not from Falcon they are from ebay £100 for cabinet perfect 100% spot on incl delivery, PCB cross over board around £15. Bass driver and tweeters from Kef Concerto mine was £66 untested they all worked.

 

The metal guard for the front of tweeter  and foam around tweeter is from Falcon around £30 until I can find an alternative....

 

Crossover parts inductors, resistors, capacitors cricklewood and ebay.

 

When are you starting your project?

 

I'll give you a warning the LS3/5A sound rubbish just over rated with BBC brand name and history. They sound like walky talkies all background sounds missing like bass and treble the midrange is zoned in excessively. I've checked with other people who have owned the originals and reviews online the sound is nothing like £1,000 - £2,000 worth, the Beovox S45 sound better.

 

But for some reason old chinese guys love them.....

 

If you brought all the Falcon diy bits it would cost above £700 and they are not 100% to specification of the 1970's ones they are modern alternatives with some other crossover and slight difference in cabinet.

chartz
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chartz replied on Sun, Apr 15 2018 8:44 PM

I have no intention to build LS3/5a’s at all. 

 

Jacques

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