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ARCHIVED FORUM -- April 2007 to March 2012

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


Latest post 08-07-2009 2:33 AM by NathanS. 6 replies.
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  • 08-06-2009 8:01 AM

    Beomaster 5500, no sound from Left

    Having added a 5500 system to my ever growing collection, I have noticed a sudden loss to all sound comming out of the Left hand channels. SPK1, SPK2 and Headphones - irrespective of audio input.  Have switched speakers round - not a speaker issue

    The line out channels are fine.

    Any idea as to whether this is a capacitor issue or just loose solder ?

  • 08-06-2009 2:50 PM In reply to

    Re: Beomaster 5500, no sound from Left

    Well something has gone pop in the L power amplifier. You will need to track the signal.I would look for a burnt component or a crack in the solder. Check that both the metal loops are both there connecting the pre and power amplifiers though!

  • 08-06-2009 4:03 PM In reply to

    • lausvi
    • Top 150 Contributor
    • Joined on 04-16-2007
    • Helsinki - Finland
    • Posts 498
    • Gold Member

    Re: Beomaster 5500, no sound from Left

    Faulty mute relay? (Try switching mute on and off several times)

    Bang & Olufsen - The art of controlling sound, picture and light

  • 08-06-2009 4:57 PM In reply to

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

    Re: Beomaster 5500, no sound from Left

    As I understand it, neither SPK1 nor SPK2 or headphones produce any sound in the left channel, which
    rules out the relay. The relay fault only affects SPK1.

    It's very common to see lots of cracked solder joints in the connector bay.
    It's also possible to flip the signal cable to the power amplifier left/right
    to help diagnose but if you are not into servicing electronics, and particularly B&O,
    I suggest you leave it to someone who is. It doesn't sound like a very costly repair.


  • 08-07-2009 2:27 AM In reply to

    Re: Beomaster 5500, no sound from Left

    Have done this (mute..mute...etc), no effect. There is definitely 'current' comming trough as there is a noticable chage in atmosphere when the speaker is plugged/un-plugged

  • 08-07-2009 2:31 AM In reply to

    Re: Beomaster 5500, no sound from Left


    Could not see any visible blowouts or cracks in the solder, though I may be looking in the wrong place, can you point me to the right place. I suspect I will have to get an engineer to look at it if it is not a solder problem.

  • 08-07-2009 2:33 AM In reply to

    Re: Beomaster 5500, no sound from Left


    which is the signal cable ? I have lots to choose from !

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