ICOM 756 Pro 3---No Audio from Speaker

Discussion in 'Radio Circuits, Repair & Performance' started by WA3YTM, Sep 8, 2017.

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  1. WA3YTM

    WA3YTM Ham Member QRZ Page

    I have a pro 3. Was using it. Turned my attention away for a while with the volume down. Came back and have no audio from the speaker. Headphones work fine. Squelch and RF gain all set correctly. Checked the external speaker jack to be sure it wasn't funky. Is there some CPU reset command for the audio? BTW restarted it after a cool down---no audio. The service manual refers to an RL351 switch at the speaker controlled by the CPU but I don't see any way to reset or control it. Any help??
     
  2. N5DMC

    N5DMC Ham Member QRZ Page

    Does the external speaker jack in the rear work? If so, then it's the normally closed contact on the external speaker jack. You did not score the funk factor of that jack, jack :)
     

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