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Posted on May 16, 2011
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I have a NAD 7100 amplifier. It's worked great for years. I use it in the kitchen to power the deck speakers outside - I've been doing this for several years. The other day I started experiencing a problem with no sound coming from the speakers. I've tested the speakers and they work fine. The amp turns on everything seems normal, I can even send music from the Tape 1 Out to another amplifier. I took off the top and took a look at all the fuses - none of them seem burnt or broken. Do you know what the problem might be?

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  • 1 more comment 
  • bjoc1 May 16, 2011

    - Nothing coming out of headphones
    - Speaker cables are connected
    - 2 jumpers are in place

    I have an input connected to CD and a cable connecting Tape 1 Output another amplfier. The music seems to pass through but nothing coming out of speakers connected to NAD. I tried switching input to Video and same issue. Tunes pass through but nothing coming out of NAD. I did notice that when I used to turn it on it would turn on, click and then click again and music would start to play. That second click doesn't exist anymore. Hope that makes sense.

  • bjoc1 May 17, 2011

    No second click when speakers are unhooked. The A B switch looks solid, however, I have no way of telling if it's working - it was before. I've testing both A and B speaker outputs but no sound. Bridging switch is locked into OFF position - this is locked with plastic stip and screw - been that way since I bought it.

  • bjoc1 May 17, 2011

    Thank you for walking me through the steps to try and get at the problem. This was very helpful!

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  • Posted on May 16, 2011
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Your problem might come up due to various reasons. Here are some points to start checking:

  • Test if there is existing audio at the phones output (use a pair of headphones)
  • Check that the speaker's cables are connected at the amplifier outputs
  • Check that the 2 jumpers connecting pre out and mains (1 for each channel) are at the proper place.
Post me back with any news. In case of a problem or clarification or further details needed, don't hesitate to post me a reply before rejecting my answer.
If you are satisfied, rate my solution with the "thumbs" or (even better) add a testimonial.

Thanks and regards
Please kindly rate this solution
Stelios
direct fixya link: http://www.fixya.com/users/technical114

  • 1 more comment 
  • Anonymous May 16, 2011

    The missing of the second click makes sence. The output stage stays at protection - power off state. This could come due to a crosswired pair of speaker cables (check if the click comes on without the speaker cables connected). The same kind of protection acts when the temperature is very high at the amplifier (check for good ventilation). A good idea also is to check the speakers a - b switch and the bridge switch (at the back of the amplifier).

    Here is a user manual, in case you don't have your own.

    Post me back any news. In case of a problem or clarification or further details needed, don't hesitate to post me a reply before rejecting my answer.
    If you are satisfied, accept my solution.

    Thanks and regards
    Please kindly rate this solution
    Stelios
    direct FixYa link:http://www.fixya.com/users/technical114

  • Anonymous May 16, 2011

    Take your time to make the checks, I'll be back after 7-8 hours.

    Thanks and regards
    Please kindly rate this solution
    Stelios
    direct FixYa link:http://www.fixya.com/users/technical114

  • Anonymous May 17, 2011

    As far as I can see there is a "hardware" problem at your NAD. I don't know if you're familiar with electronic boards troubleshooting. If not, you have to get the amplifier to a service center for repair.
    In case you can manage the electronics, post me back to guide you further.

    In case of a problem or clarification or further details needed, don't hesitate to post me a reply before rejecting my answer.
    If you are satisfied, accept my solution.

    Thanks and regards
    Stelios
    direct fixya link:http://www.fixya.com/users/technical114

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