Question about NAD C370 2-Channel Amplifier

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No problema

Posted on May 26, 2008

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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

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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

2 Answers

HELP PLEASE. NAD 370 JUST DIED...


This could be as simple as a bad connection at the voltage regulator IC or blown output transistors. If you have a multimeter and some experience with electronics repair, this should be fairly straightforward.

Let me know and I'll try to walk you throught the repair.
Dan

Sep 07, 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

3 Answers

NAD C370 distortion.


It looks like you may shorted some part of the audio circuitry, Most likely you will have to replace the entire board (easier option).

If you can find a replacement board, it shouldn't be too hard to replace, if you have had prior experience with electronics. However,i think it is best you let an experienced electronics repair guy do this for you.

hope that helps..

May 25, 2008 | NAD C370 2-Channel Amplifier

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