onkyo ht-r990

Discussion in 'AV Receivers & Amplifiers' started by slavi, Feb 2, 2018.

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  1. slavi

    slavi
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    Hello,
    I have onkyo ht-r990 that doesn`t have sound, usb and net. I change D830K013BZKB4, but the problem is the same. I think that the problem is in the firmware. Is it possible to write a new firmware with RS232 or a different way.
    Please help!
     

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