NAD C350 2-Channel Amplifier Logo
Anonymous Posted on Oct 15, 2011

Wotcha, i've just taken amp out of storage, has'nt been used for a while cant get volume to work properly the sound goes from speaker to speaker and up and down in volume whilst crackeling a lot as i turn the control knob up and down, it's all over the place,even without touching the control it'll suddenly go very quite but just out of one speaker or the other and then a few minutes later back up in volume. HELP

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  • Master 8,546 Answers
  • Posted on Oct 18, 2011
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One way of proving it ISN'T the amp circuitry is to remove the pre-main jumpers and jack in a source that has its own volume control (or try a CD that starts really low) because this bypasses ALL the amps controls. If it sounds ok (albeit LOUD) I'd suspect oxidized contacts on the controls. Turn it off and vigorously operate all controls a zillion times to wear through it. In mosty cases it's the unused controls that fail because they never get wiped. Maybe a shot of contact cleaner on those you can access.

http://www.overload.it/supporto/643/manuali/NAD-C350.pdf

Testimonial: " Thanks Mr Dunn Sorted, after twiddleing volume control up and down a trillion times everything came back to normal, so it was a dirty/corroded pot as i know understand, i bought some Caig DN5 and applied it carefully, problem totally solved. Thankyou P. Furtek."

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  • Posted on Dec 05, 2011
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Damage to elictronics can be done by improper humidity.

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