ICOM IC-751A No audio except for AM

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W4RUS

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Jan 7, 2011
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Alexandria VA
I have a 751A that has been offline for several years. When I started it back up it seems to work ok on AM, I can hear stations with good audio and the meters work. But when I switch to CW, SSB, or RTTY the rig goes quiet with no audio. The tuning seems to work ok and the frequency display is correct. The S-meter still shows some movement with signals. I've not yet tried to transmit. Any clues as to what might be the problem would be appreciated. Thanks,

Ken W4RUS
 

k3cfc

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Joined
Feb 27, 2011
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715
Location
Beavertown Pa.
I have a 751A that has been offline for several years. When I started it back up it seems to work ok on AM, I can hear stations with good audio and the meters work. But when I switch to CW, SSB, or RTTY the rig goes quiet with no audio. The tuning seems to work ok and the frequency display is correct. The S-meter still shows some movement with signals. I've not yet tried to transmit. Any clues as to what might be the problem would be appreciated. Thanks,

Ken W4RUS
This will be a good start.
http://www.w4ish.net/Manuals/pdf/IC-751 and IC-751A Service.pdf
 
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