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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


    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?
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