Question about Sony ICF-SW77 AM/FM/SW Radio

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Sony ICF-SW77 no Audio

Hello, My icf-sw77 was working fine than somthing went wrong. All the control functins work except the signal strength display is somwhere in the middle. I can tune and do everything else but there is no audio. I am 99.9% sure that the audio amp is ok I tested it with a signal generator. I think a portion of RF/IF is bad that is becaus the signal strength display doesn't move. Any idea what is wrong? Does anybody have copy service manual. I called Sony, they don't service this product. Regards, Greg

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You can get the service manual online at

Posted on Aug 12, 2009


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