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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 02-16-2010 7:42 AM by tournedos. 5 replies.
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  • 02-15-2010 7:10 AM

    • RMPJ
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    • Joined on 02-15-2010
    • Posts 2
    • Bronze Member

    Beogram 4000 - 1 channel doesn't work

    Hi,

    first of all I would like to say that I just signed up to Beoworld and hope that anybody will forgive me as I am just starting to go through the forums, groups etc. in case I should have done something differently.

    After a long search I finally found a Beogram 4000. The Stylus needs to be replaced, I knew that, and 1 channel doesn't work. I have been in touch with the people I know around here in Germany who are capable of reparing this. I have learned as much that the channel failure must come from a mecahnical part (e.g. amplifier etc.) rather than the stylus. As we all know B&O does not supply any spare parts and I was hoping that somebody in this forum may be pointing me in the right direction of what best to do.

    Thanks a lot, Robert

     

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  • 02-15-2010 9:44 AM In reply to

    Re: Beogram 4000 - 1 channel doesn't work

    Welcome, Robert - and no problem at all, your post is right where it belongs Smile

    A Beogram 4000 doesn't really have any electronics between the stylus/cartridge and the output connector (well, there is a relay, but it is unlikely to fail this way).

    The most likely problem is the output DIN connector. I would start by looking inside it, one of the wires might have simply come loose from the soldering and then it will be an easy fix.

    One channel of the cartridge may be broken as well - has it actually been tested/measured already?

    -mika

  • 02-15-2010 12:22 PM In reply to

    Re: Beogram 4000 - 1 channel doesn't work

    It is actually not uncommon for one channel to fail in a stylus. It is also common to have loose contacts in a DIN plug. What you need is a working beogram to compare it with. A working cartridge would be a start but you cannot be sure which part of the pathway it was if it still did not work. A complete Beogram would allow you to replace each part separately. Maybe someone on forum lives close to you?

  • 02-16-2010 6:12 AM In reply to

    • RMPJ
    • Not Ranked
    • Joined on 02-15-2010
    • Posts 2
    • Bronze Member

    Re: Beogram 4000 - 1 channel doesn't work

    Mika, Peter,

    thanks a lot for your input. I have meassured the DIN plug and it's ok.

    Do you think it could be the magnetic preamplifier?

    Currently I am neglecting the system itself as we tried another stylus and we had the same problem.

    P.S. Just spoke to somebody who suggested to look into the muting relay - what do you think?

     

    Thanks,

    Robert

    Filed under: ,
  • 02-16-2010 7:33 AM In reply to

    Re: Beogram 4000 - 1 channel doesn't work

    The Beogram was originally mine, I have tried with 3 different styli. I think that the muting relay is stuck

    -Søren

    Beocenter 9300, Beogam CD50, Beocord 5500, Beomaster 3400, Beomaster 4400, 2 Beogram 4000, Beomaster 8000, 2 beogram 8002, Beovox S-75, Beovox MS150.2, Beovox RL6000, Beovox S-35, Beomaster 6000, 2 Beocord 9000, Beocord 8004, Beocord 5000, Form 1, 2x Beolink 1000, Beo4, MX3500, LS4500. Born 1993.

  • 02-16-2010 7:42 AM In reply to

    Re: Beogram 4000 - 1 channel doesn't work

    It might be an idea to just remove the relay then while looking for a replacement. It doesn't break the signal path when operating, it just shortcircuits the signal to ground - so removing it will just make the Beogram operate like turntables from other brands!

    -mika

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