Question about NAD T751 Receiver

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Nad 751 suden loss of somthing thier is a loud buzzing like a 1/2

I have changed cables,cd players, The dealer told me with out even looking it was not worth fixing. Something in the front panel they said. Isounds like a resitor or diode is heating up and failing how would I test it?

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2 Suggested Answers

smarthome2
  • 1114 Answers

SOURCE: No signal from sub connected to NAD T760 in test mode.

Try using front pre out to the sub from the receiver. the crossover is in the sub anyway. If this works change your settings on the receiver and test again. If sub is still inop, could be an internal issue with the sub amp. Does your sub amp have an on/auto/off switch or light? check that as well. Hope this helps, if you need further assistance, send a reply and I'll help some more

Posted on May 24, 2009

alpug
  • 1961 Answers

SOURCE: I have a NAD T

Hello!
There is nothing to adjust internally on your receiver... I'm sorry to say that!
However, there is a way to modify the receiver, by adding a resistor at the input signal selector to where the DVD player is. If that is what you want.
Let me know if you want to modify and I will instruct you

Posted on Mar 14, 2011

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1 Answer

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Bad screening on your cables.
Braided cable coax touching signal cable
Wires in close proximity to power wires
Interference from 'always on' appliances like fridges, freezers and heating boilers.

Disconnect each lead in turn. If that doesn't fix it, it is an appliance.

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Hi,
you may have a bad Earth power 110 V AC cable connection which makes such hum / buzz even nothing connected..
Check the connections between components and make sure they are secure before proceeding to the next Step. Sometimes, loose connections can cause a hum.
  • Separate the audio cables from the power cables; electromagnetic interference from the power cables can cause stereo hum. Use cable ties to secure the audio cables away from the power cables.
  • Plug in a surge protector to the outlet, and then plug all the components into that surge protector
  • Connect a ground plug to the surge protector and then plug the ground plug into the main outlet. A ground plug is available at any hardware store, and turns a three prong connection into a two prong. Ground plugs help eliminate 60 cycle hum.
  • 5 Connect the ground wire from your turntable to the ground wire connection on the receiver. If this doesn't work, looking on the back there should be a grounding point,

    Unplug your receiver.. Split a wire and attach one of the splits to the receiver where you will see the text, "ground" or something similar. Attach the other end to something metal such as a pipe that goes into the ground. Secure with electrical tape. Plug in.
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  • Read more: How to Fix a Hum on a Stereo Receiver ' eHow.com http://www.ehow.com/how_5183193_fix-hum-stereo-receiver.html#ixzz1PpFHs1Mv


    Take care and please remember to rate "AS THUMBS UP" Thanks

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    Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.

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    Anyone with ideas what to do?

    Thanks
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