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Bose Wave Radio AWR1-2W Mains hum

Discussion in 'Troubleshooting and Repair' started by GrahamBr, Jan 20, 2018.

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  1. GrahamBr

    GrahamBr

    1
    0
    Jan 20, 2018
    Significant 50Hz mains hum on lower FM frequencies around 90khz, hardly noticeable at 100khz or when using AUX INPUT.
    Have not opened it up yet, but guess a power supply issue. Would appreciate any pointers.
    This is an early model - don’t know whether it has IC smoothing as described in a You Tube post for a later model with CD player.
    Are there any circuit diagrams available for this model?
    Thanks
    Graham
     
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