Question about NAD C370 2-Channel Amplifier

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NAD C370 do not power up???? - NAD C370 2-Channel Amplifier

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Posted on Jan 02, 2017

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SOURCE: No power at all on NAD C370

User manual here
http://nadelectronics.com/img/manual/NAD-C370.pdf

Read page nine for some simple troubleshooting tips and see if that helps.

It *could* be a fuse but given you've owned it for a while and NAD amps often have capacitor issues in the power supply, chances are it needs some serious work by a good tech. Contact NAD directly and see what they recommend.

Posted on Dec 29, 2008

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  • 185 Answers

SOURCE: my NAD C350 amp only powers one speaker channel

over heating is a sign of overloading or over bias

Posted on May 27, 2010

petraman7
  • 1175 Answers

SOURCE: The balance pot of my

Only if you replace the pot with two resistors of equal value. Both need to be also equal to 1/2 the value of the pot. Then at the point the 2 res tie together -- Tie that point to the middle lead location and the other leads to the other points where the pot was connected. Use 1/2 watt or 1 watt res.

Posted on Nov 03, 2010

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1 Answer

NAD C370 distortion


Check first if you got +68/-68V on amp module left and right on contact CZ302 and CZ402 pin 2 & 7. Often the -68V is missing. This is caused by faulty transistor Q713 in +68/-68V power supply. It's a 2SA872.

Oct 31, 2013 | NAD C370 2-Channel Amplifier

2 Answers

Nad c370 keeps switching off


Check the speaker wiring for shorts, a common problem. If everything checks out there may be bad solder joints on the main board especially in the output stage, or there is a fault in one or more driver transistors.

Jun 02, 2012 | NAD C370 2-Channel Amplifier

1 Answer

The balance pot of my NAD C370 is not working, will the amp still work if I remove the balance pot?


Only if you replace the pot with two resistors of equal value. Both need to be also equal to 1/2 the value of the pot. Then at the point the 2 res tie together -- Tie that point to the middle lead location and the other leads to the other points where the pot was connected. Use 1/2 watt or 1 watt res.

Nov 02, 2010 | NAD C370 2-Channel Amplifier

2 Answers

Knob for NAD amp?


Hi...
try your "local" NAD seller and ask them?
Contact NAD by email.

or
www.audiokarma.org
100's of users someone there should be able to help.

Jan 11, 2009 | NAD C370 2-Channel Amplifier

1 Answer

No power at all on NAD C370


User manual here
http://nadelectronics.com/img/manual/NAD-C370.pdf

Read page nine for some simple troubleshooting tips and see if that helps.

It *could* be a fuse but given you've owned it for a while and NAD amps often have capacitor issues in the power supply, chances are it needs some serious work by a good tech. Contact NAD directly and see what they recommend.

Dec 29, 2008 | NAD C370 2-Channel Amplifier

1 Answer

Nad C370


Since the problem seems to be sensitive to the volume level, I would be looking at the output wave form for any DC current. Although the protection circuit should detect any DC present, it is possible that some is leaking through. Also, verify that the speaker impedence is correct. If the amp is seeing too low an impedence load, it will work too hard causing excessive heat which will shutdown the unit as well.

Keep me posted.
Dan

Nov 04, 2008 | NAD C370 2-Channel Amplifier

1 Answer

NAD C370 Right channel distortion


Sounds like you have lost the power amp transistor(s) or IC for this channel.

Aug 29, 2008 | NAD C370 2-Channel Amplifier

1 Answer

Blown Mains Fuse


You should repleace the old transformer with the new one

Jun 13, 2008 | NAD C370 2-Channel Amplifier

1 Answer

NAD C370 in protection mode


With closed eyes -replace all capacitors on protection PCB All of those caps are overheated and dry out (they lost there capacidance).Note that capacidance meter will not help you at all. Now unit will work. BUT!!! Most important!!! Check four big filter capacitors in the middle of unit!!!! If they are white (NAD 10000uF/80V) DO NOT USE UNIT AT ALL!!!! FIRE HAZARD!!!!! Contact me... Dariusz
Dariusz70@verizon.net

Feb 10, 2008 | NAD C370 2-Channel Amplifier

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