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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 04-25-2009 3:34 AM by jens m. 28 replies.
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  • 04-24-2009 4:37 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: beogram 6006 platter not moving, coils are humming

    A scope would provide the best view of the pulses but you can try to rearrange
    the sensor slightly inwards or outwards and see if it changes anything.

    The humming once per revolution is a typical symptom of a bad
    tachodisc (not in this case unless some holes are blocked or the disc is dented) or misadjusted opto sensor.

    Alternatively, measure the voltage across the sensor when over a hole and while not  (rotating the spindle
    very little by hand).

    The eddy-current coils are quite power guzzling ones and if not run correctly, they will easily
    draw enough current to blow the fuse.

    Martin

  • 04-24-2009 5:15 PM In reply to

    • jens m
    • Not Ranked
    • Joined on 04-17-2007
    • munich, germany
    • Posts 53
    • Bronze Member

    Re: beogram 6006 platter not moving, coils are humming

    hi martin!

    i measured voltage acros the sensor and it seems to work. when blocked, it reads out ca 15volts, otherwise it´s around 3 volts.

    the humming is rather constant and not once per revolution and starts as soon as the gram is plugged to mains, but becomes louder, when play is pressed and the platter tries to go to 33.33 rpm.

    jens

  • 04-25-2009 3:06 AM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: beogram 6006 platter not moving, coils are humming

    You are not using a 60Hz transformer module in a 50Hz area or vice versa ?
    Beogram 6006 / 8000 / 8002 won't work with stepup/stepdown voltage converters if the mains frequency
    is wrong compared to what is printed on the transformer module. The transformer module needs to match the local
    mains frequency.

    I wish I could guide you further, but I think this is one of the cases where a trained
    technician needs to take a look at it.

    Martin

  • 04-25-2009 3:34 AM In reply to

    • jens m
    • Not Ranked
    • Joined on 04-17-2007
    • munich, germany
    • Posts 53
    • Bronze Member

    Re: beogram 6006 platter not moving, coils are humming

    hi martin!

    no, it´s the right transformer, and as said after i replaced the caps, it worked perfectly for nearly two years, problems just came up last week.

    i think i will put the beogram off the desk for some days and give it another try then...

    thanks a lot martin for help and patience!

     

    have a nice weekend!

     

    jens

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