beogram 8002 always lowers the arm

3 replies
G(
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gebi (archived)
Bronze
Posted December 7, 2011 at 18:00 GMT
#1681652

dear all,

after cleaning the platter the arm always lowers at the beginning of the platter -- bummer

the cleaning of the platter removed the "black lines" on it.
therefore my question: does the 8002 (- sensing arm electronics) needs the black lines on the platter to find the beginning of the vinyl-record  (from a quick look in the service manual, the sensing arm electronics is AC coupled ) ?

a perfect solution would be to get from a nice member an replacement for the now blank platter or I'll become an artist in painting.......

thanks

 

S(
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Step1 (archived)
Bronze
Posted December 7, 2011 at 19:01 GMT
#1681653

Oh dear, yes the stripes are what keep the arm from lowering! i guess you have learnt the hard way that b&o platters do not respond well to chemical cleaning!

You could somehow re-create the stripes with an old thin record mat sliced up and glued down maybe? Not the prettiest solution but the only other option would be to source a new platter - these do come up on ebay...

G(
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gebi (archived)
Bronze
Posted December 14, 2011 at 16:05 GMT
#1681654

A nice member of the forum supplied  me with a new platter. Now the 8002 is working again.

The 8002 is a complex machine. Did not expect that the black lines on the platter are more than just a decoration. But thinking twice - this makes sense. If the sensing arm would just react on bright (platter) and dark (record), this method would not work reliable e.g different surrounding light conditions etc. AC coupling is the more robust solution.

 

 

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