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Bose Wave radio humming noise

60 Hz hum on old Bose Wave radio everytime power-up, but sometimes after 5 minutes the hum stops. have tried different power outlets. have tried using power supply noise filter. hum occurs even when playing from AUX input. suggestions please

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Actually the problem was caused by a bad 470uf cap, that was used to filter the powersupply for all the analog amps. Replaced the cap the unit works like new.

Posted on Apr 06, 2008

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This is caused by a faulty filter on the IC allowing main frequency effects to go to the speaker, not a user servicable repair, it needs to go back to the shop.

Posted on Mar 11, 2008

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