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Beogram 5500 turntable noisw

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Michael Wilson
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Sutton Coldfield, West Midlands, England
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Michael Wilson posted on Fri, Nov 27 2020 10:23 PM

I have just  had this turntable serviced. The engineer fitted a new belt. When I play the turntable it makes a clicking noise which appears to come from the black wheel which supports the belt. The engineer advises that the belt cannot be adjusted. He said that a small adjustment was needed to something else. Could anyone please clarify what the problem could be.  Many thanks for your help in this matter. 

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AdamS
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AdamS replied on Sat, Nov 28 2020 1:48 PM

It could well be the usual issue of a plastic tyre cracking that afflicts these motors. If I may quote B&O guru, Tim Jarman...

It is usually caused by the magnetic ring for the FG servo just above the commutator inside the motor. There is a plastic “tyre” that holds it in place in the motor and these age and then crack - the loose end gets mixed up with the brushes and make a noise. Normally just removing the offending loose piece is all you have to do, the ring seems to stay in place by itself. To get at it, remove the bottom of the motor, unsolder the PCB and then take off the brush plate. It is much easier to put it back together if you take the pulley off first, then you can insert the rotor into the brush plate before sliding the complete assembly into the stator. Be sure not to lose any of the spacers and washers on the motor shaft, their positions are important. A tiny spot of oil on the two bearings is also a good idea while it is in pieces.

 

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