Humming sounds on external speaker

Discussion in 'C-Bus Wired Hardware' started by shah, Aug 11, 2010.

  1. shah

    shah

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    Hi all,

    Face a weird problem and just want to check whether any of you might have face the same issue before and did find a solution for this.

    In this hall, we installed a L5112D10B2, 5 nos of 5104D5B, and a touchscreen + a 12CH relay. Hate to say this but I swear It was working fine for the past few months (I would say 5 months).

    The speakers will produce a humming/buzzing sounds if these conditions are met :-
    a) Dim almost all the channels on L5112D10B2 to somewhere around 50%
    b) PC/laptop with audio output connects to the sound system and its power module must be connected to the wall power outlet (AC Current).

    Any help would be welcome.

    Rgds
    Shah
     
    shah, Aug 11, 2010
    #1
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