SA-9800 One Channel Cut Out and Relay Question

Discussion in 'Pioneer Audio' started by basil13, Aug 9, 2018.

  1. basil13

    basil13 Active Member

    Messages:
    112
    Location:
    Ontario, Canada
    The owner said one channel was cutting out on him when listening to a tuner. I have not been able to recreate the issue yet, but did notice high DC on one channel.

    If one channel has high DC offset does the relay disengage both channels or can it cut off one?

    Thanks
     

     

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  2. basil13

    basil13 Active Member

    Messages:
    112
    Location:
    Ontario, Canada
    I believe I can answer my own question after reading the circuit description. Any excessive DC voltage will trigger the driver Q3 to turn on and de-energize the relay.
     

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