Beogram 6000 / 4002 Problems and Solutions

64 replies
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loris (archived)
Bronze
Posted September 15, 2009 at 15:58 GMT
#1753188

tournedos wrote:

You probably need to run a ground wire from the chassis of the Beogram to the earthing screw on your amp.

Well I did this but a certain amount of hum (unacceptable) did remain. I did a lot of trying, touching here and there with the ground wire but apart from a little reduction the hum was always there. It COMPLETELY/ABSOLUTELY stopped when I run a wire from the earthing screw of the amp to the aluminium "box" of the carriage. I mean COMPLETELY. EUREKA. Now: the carriage moves. Where do I screw a wire that makes the same effect? Why do this happen?

 

 

Loris

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loris (archived)
Bronze
Posted September 19, 2009 at 18:33 GMT
#1753189

I definitely solved the problem running a wire from pin 5 of the 9 pin plug to the earthing screw of the amp :-)

Loris

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perola (archived)
Bronze
Posted September 7, 2011 at 03:18 GMT
#1753190

Just like to mention i just followed your recipe with my Beogram 4004, running smoothly except the tone arm would not lower. It had not been played for 16 years. Just a couple of clicks - no tonearm reaction. After some sewing machine oil onto the specified areas - voila - tone arm lowered! Thank you for the tip.

YA
Offline
yachadm
Bronze
Posted September 7, 2011 at 06:25 GMT
#1753191

That's fine, but you MUST disassemble the pivot points and clean out the old gunk, before putting in new oil.

The reason is quite simple - with the old gunk in there, the solenoid is working very hard to overcome the friction, drawing a fortune of current, and is heating up, drastically shortening its lifetime.

With the gunk removed, it's working effortlessly, and cool. You can check the difference with an ammeter - it's quite interesting to see the difference in current draw with a gunked up machine, as opposed to a clean machine.

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Electronics Technician in Jerusalem Israel. B&O fan for over 50 years.
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