Beogram 6500

11 replies
F(
Offline
ferrari458spider (archived)
Bronze
Posted September 18, 2011 at 04:05 GMT
#1681398

I have a Beogram 6500 as part of a complete Beosystem 6500 I purchased brand new for my wife. It has not been used more than twenty times in its lifetime and not at all in the past ten years! When I decided to use it this week, it sounded fine at first but then the music gradually become distorted as the arm moved over the vinyl. The arm will move the whole distance and then retrn as it should to the 'park' position.

I guess it needs a really good check over/clean / service. Please can you advise me who could carry out this work? I will obviously pay for all carriage and any work necessary - in fact, if the distance is not too great, I'll deliver/collect the item.

I am most anxious that the work is done to the highest standard - the unit is absolutely concours & I want to keep it that way. I am a B & O fan (Beogram 3002 from new in 1973!)

Any suggestions or advice in respect of this problem would be most welcome,

Danny Wells ( ferrari458spider)

 

mexking
Offline
mexking
Bronze
Posted September 18, 2011 at 04:13 GMT
#1681399

Location ??

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050
M(
Offline
Medogsfat (archived)
Bronze
Posted September 18, 2011 at 06:47 GMT
#1681400

I would start by checking the cartridge/stylus. If it hasn't been used for 20 years it is more that likely that the internal suspension in the cartridge has deteriorated & failed drastically as the playing of the record progressed. It seems a bit odd but when these cartridges fail they do so very very quickly.

Chris.

ME
Offline
mediabobny
BronzeFounder
Posted September 18, 2011 at 10:49 GMT
#1681401

Was the record dirty?  Could be the stylus got gunked up as playing progressed.  Trying cleaning it using a stylus brush or better yet a Q-Tip (cotton bud) dampened (not wet) with isopropyl alcohol.   This will remove caked-on dirt better than a brush.  But be very gentle and only brush from rear to front.  

Either this or the cartridge suspension failed in mid-play, as Chris mentioned.  Quite common.

F(
Offline
ferrari458spider (archived)
Bronze
Posted September 19, 2011 at 15:57 GMT
#1681402

Thanks to you all for your interest. I have checked the stylus cantilever and it seems fine - flexes and returns as normal. The vinyl was spotless - I checked it out on my other system & the sound is  perfect. I have tried other vinyls and there seems to be a general distortion in the sound quality.

This distortion gets worse as the arm moves towards the centre of the vinyl. I wonder if the slide that the arm moves along is in need of cleaning/lubrication. If it is dry/dusty could it be impeding the smooth movement and therefore the tracking of the arm?

I really would like to get this unit sorted properly - whatever is needed.

Comments please, especially details of serious B & O technicians able to service the item to 'factory spec.

I am based in Uttoxeter, Staffordshire but am prepared to travel or arrange delivery/collection to where-ever is necessary.

 

Regards,

 

ferrari458spider

DI
Offline
Dillen
BronzeModeratorFounder
Posted September 19, 2011 at 16:05 GMT
#1681403

If the tonearm and sensorarm travels nice and parallel over the whole record, the
mechanical parts are fine.

In most cases of sound problems, the cause is the cartridge.

Martin

ME
Offline
mediabobny
BronzeFounder
Posted September 19, 2011 at 16:35 GMT
#1681404

Do you have the tracking force set correctly for the cartridge you're using?

F(
Offline
ferrari458spider (archived)
Bronze
Posted September 20, 2011 at 04:25 GMT
#1681405

Good morning,

 

The unit is fitted with an MMC 2 cartridge and the tracking force set at 1.0 gm as per the manual.

As, from all the posts to date,  it is looking more & more likely to be a problem with the cartridge, if I should I need a new cartridge, where can I buy one from?

SH
Offline
Søren Hammer
Bronze
Posted September 20, 2011 at 04:35 GMT
#1681406

Axel at 

filip_kbh
Offline
filip_kbh
Bronze
Posted September 21, 2011 at 11:57 GMT
#1681407

Maybe you should check the tracking force with a digital scale. It could have become out of adjustment.

Location: Copenhagen

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