Sanyo M7950K amplifier not working

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newtonstl

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May 17, 2017
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So I picked up this Sanyo boombox which looks great, and seems to work. Tape plays, radio tunes, and LED meter shows sound being played. With headphones or through speakers there is no volume. When the volume is pushed to Max you can barely hear from the speakers, it is the audio from radio station or tape. I have opened the unit and don't see any capacitors leaking or bulging. Any ideas? I was thinking of replacing BA5302A power amp. Voltage to amplifier board is 10 volts across CN12(black) & CN13(red). I sprayed the volume slider and operated it furiously. Hoping to get this working.
 

newtonstl

Member (SA)
May 17, 2017
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I've run cleaner in headphone jack twice and inserted/removed jack over 30 times. Contacts (connect/disconnect) with jack inserted. Is the record bar the long switch on the amplifier board? I sprayed cleaner and operated it numerous times with no change.
 
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