Beocenter 7007 intermittent auto phono mute issue

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  • #4941
    ColinPowell
    BRONZE Member
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    Hi,

    Has anyone experienced an issue with the auto mute feature when playing records on the Beocenter 7007?

    Sometimes when playing a record the amplifier causes distortion in the right channel when the auto mute switches back on after the arm has dropped at the beginning of a record. If I press Phono again to raise the arm and then Phono for the 3rd time to set the arm down again the problem is solved. So there appears to be a 50 / 50 chance of this distortion each time I play a record.

    Once cured it is fine until I play another record wherby it seems to be pot luck if the distortion is there or not.

    Is there a common component which may be causing this that I can replace?

    Any help will be appreciated.

    Thanks,

    Colin

    #5243
    ColinPowell
    BRONZE Member
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    I would appreciate anyone’s input into a component I can change on the amplifier board.

    There’s a board for sale cheaply on Ebay if it’s worth swapping them over.

    I just haven’t a clue when it comes to electronics.

     

    Regards,

     

    Colin

    #5249
    Mark-sf
    BRONZE Member
    • Topics Started 0
    • Total Posts 72

    Your problem is not likely an electronic one but a mechanical one. There is a muting switch under the tonearm that is activated by the arm movement. It likelly needs its contacts cleaned. The service manaul is at https://beomanuals.com/manuals/Beocenter/Beocenter%207700/Beocenter_7700-Service_Manual.pdf. The part is 1567 in the parts list but the diagram marks it as 1557. You open it by removing screws in the rear and it hinges from the front.

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