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Denon AVR S720W Main Speaker no output.

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    Denon AVR S720W Main Speaker no output.

    Hi everyone!

    Does anyone out there have any insight as to why my AVR will not output sound through main speakers or head phones?

    Here is the info:
    Unit powers up normal
    Relays click
    Zone 2 works fine 100% of the time.
    Main Zone sometimes works fine like .05% of the time.
    Sometimes I can plug headphones and hear scratching sound via the headphones. Once that happens I can unplug the headphones and the main speaker zone works fine.

    is there something I can inspect?

    I have somewhat moderate skills with electronics. I have a VM and oscilloscope ( admittedly never really used ), but I would love to bring this AVR back to life.

    #2
    It sounds like the headphone jack is dirty and the switch needs to be cleaned.

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