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Latest post 12-01-2011 1:27 PM by beowild. 5 replies.
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  • 11-30-2011 2:20 PM

    Anyone?? What Could be wrong

    Reply Contact

    One of my BL4000 is making a loud hummm when powered on. I coudl eliminate following by trial and error

    1. Powerlink Cable is fine

    2. Source is fine - AUX input from BS4000

     

    Beovox RL 60.2, RL 6000, S45-2, CX 50, Cona, Beolink Passive, MCL2P, BM4500, Beosound 1, Beocenter 2500, Beolab 2500, Besound 4000, Beolab 4000, Beocom 6000, A8, Beosystem 1
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  • 12-01-2011 10:55 AM In reply to

    Re: Anyone?? What Could be wrong

    Reply Contact

    Hi

    Does the hummm stop after a while?

    Best Regards

     

    David

  • 12-01-2011 11:00 AM In reply to

    • Evan
    • Top 25 Contributor
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    • Joined on 12-15-2008
    • Ohio | USA
    • Posts 2,601
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    Re: Anyone?? What Could be wrong

    Reply Contact

    Maybe a transformer problem?

    Evan

     

  • 12-01-2011 12:19 PM In reply to

    Re: Anyone?? What Could be wrong

    Reply Contact

    Could definately sound like a problem in the power supply.

    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.

  • 12-01-2011 12:43 PM In reply to

    Re: Anyone?? What Could be wrong

    Reply Contact

    The humm is constant - more audible with no audio signal and power on.

    I guess while playing music the hummmm is supressed. Is it a simple fix to replace the power unit - the transformer i guess

    Beovox RL 60.2, RL 6000, S45-2, CX 50, Cona, Beolink Passive, MCL2P, BM4500, Beosound 1, Beocenter 2500, Beolab 2500, Besound 4000, Beolab 4000, Beocom 6000, A8, Beosystem 1

  • 12-01-2011 1:27 PM In reply to

    Re: Anyone?? What Could be wrong

    Reply Contact

    If the humm is constant please try the following:

    - Test the same configuration with all lights and other electric things switched off (Most humm's start from dimmed lights)

    - Change the power cord to another outlet (the same as your music system or the bl4000 without the humm)

    - Physically exchange the two bl4000 but keep all the existing cables (just to be shure you really have a problem in one of your beolabs)

    Good luck

    David

      
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