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Nad C350 2 channel Amp continually in protection mode

Nad C350 2 channel Amp continually powers up into protection mode only. Is this something like the C370 amp with dried out capacitors on the protection PCB?
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Hi,

here is the solution to your problem,you will have to visit this forum for the fix.

Click HERE

Goodluck,
Please don't forget to rate the solution

Posted on Apr 02, 2008

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That could indeed be the issue, but you must check your speakers, wiring, and also the oupt stages for problems. Maybe the prtection circuits are actually doing their job. lol

Hope that helps...

Geno

Posted on Apr 02, 2008

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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.

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it went to protection mode check your cables first and then check your speakers-and confirm no cable touch each other(try with another speakers had same rating)(watt)--means how much power can get.

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Hi there

Firstly, check for conductive hold down glue about the output stages. This can cause the problem you have. Or there may be a failing component somewhere in the output stage of that channel. Check for leaky transistors,diodes an capacitors. You will need to remove semiconductors to check for leakage, If you dont have alot of experience faultfinding amplifier power stages, I suggest you take it to a NAD authorised service center.

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