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Marantz SR7400 Multi-Room with Sonamp 2120T MKII

I have a multi-room (outdoor speaker set) hooked up to my Marantz SR7400 driven by a Sonamp 2120T MKII. I recently moved and re-installed everything, including my outdoor speakers. The day it was first installed, the outdoor speakers worked but the Multi-Room system on the Marantz stayed on all the time--causing it to heat up. I was able to turn off the Multi-Room, but now when I turn it back on, the Sonamp won't kick on as it should--and so therefore no outdoor speakers. I believe I pressed some buttons accidently on the Marantz or the remote--and now the Sonamp doesn't get the audio signal from the CD line out and won't kick on. Do you have any suggestions?

Thanks,

Liz Walker

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  • Liz W Mar 27, 2008

    I've read both manuals cover to cover and done everything. I'm sure I'm missing something. Do you have a specific suggestion?

    Thanks,

    Liz

  • Liz W Mar 27, 2008

    Mmm...that's not very helpful. I've not made any changes to the cabling since the system did work the first time. One possibility would be a bad wire from the Marantz output to the Sonamp. But I want to make sure I have the settings correct on the Marantz before I start unplugging. It's very complicated and hard to get back there.

    Liz

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A possible overheating on the device has cause the unit to malfunction. It's possible that because of that overheating on the unit some parts have given up, and broke.. This happen occured when overheating on the unit, and sometimes it may go to shut down and not powering on..

Posted on Mar 30, 2008

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Try this

It is the manual and page 23 might help you out, if it doesn't, then browse around and let me know if you still can't figure it out.

Hope this helps, good luck and have a good day

Posted on Mar 27, 2008

  • 2 more comments 
  • Benjamin Patri
    Benjamin Patri Mar 27, 2008

    try rewiring the speakers that aren't working into a different slot that works if possible and let me know what happens

  • Benjamin Patri
    Benjamin Patri Mar 27, 2008

    Have you tried contacting the manufacturers about this problem, I will give you the numbers and maybe they can help you, I will keep looking and trying to figure this out though

    Here is the contact info for Sonance tech support





    • 1.800.582.0772




  • Benjamin Patri
    Benjamin Patri Mar 27, 2008

    Marantz Contact Information

    Main support number (630) 741-0300

  • Benjamin Patri
    Benjamin Patri Mar 27, 2008

    I'm going to say it might be either a fuse problem, power supply problem, or switch problem.


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I would start over, unplug them and start over.

Posted on Mar 27, 2008

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