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 bose radio 60 hz hum		  New Topic  Reply to Topic
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tim
Mad Scientist

198 Posts
Posted - Feb 21 2009 :  09:56:13 AM  Show Profile  Reply with Quote
hey all anyone know about the common problem with a 60 hz hum when this radio is turned on? i checked everything at the power supply caps and even added one but still when its turned on the hum is there but when its on for a few minutes the hum is gone.

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Aaron Cake
Administrator

Canada
6718 Posts
Posted - Feb 24 2009 :  10:31:15 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Is the hum coming from the speakers? It may just be the transformer laminations warming up if it's not from the speakers.
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tim
Mad Scientist

198 Posts
Posted - Feb 25 2009 :  07:52:08 AM  Show Profile  Reply with Quote
yup it comes from the speakers but i did add a cap to the power supply but i think i may be missing the bad one. the one i added did make it alittle better.
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