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Please help with schematic or service manual for NAD 3100 amplifier

Sometimes right channel doesn't work. On preamp only it works normal. The balance/volume knob works normal.

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  • pettronius
    pettronius Feb 23, 2014

    Thank you Graeme Ross. Like you said, it was the speaker protection relay.

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  • Audio Player... Master
  • 5,056 Answers

You can try this! I don't know if you will get the file!!
http://www.wiringdiagrammanual.com/e/action/ListInfo/?page=7&classid=195&totalnum=340

Posted on Mar 09, 2015

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Posted on Jan 02, 2017

robotek
  • 1512 Answers

SOURCE: nad s200

It is most probably a dirty speaker protection relay. gently tap the relay(the one that engages shortly after turning the amp on) when the fault is occurring and see audio returns. This should ascertain the problem. Replace it if it is a sealed type, or if it has a "lid" you can get off, burnish the contacts with a white business card, and give it a spray with contact cleaner/lubricant. Good luck and a "fixYa" rating would be great for my profile :)

Posted on Feb 06, 2008

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