Question about NAD T751 Receiver
Dear audio experts,
I have a NAD T751 Sound Receiver with a constant buzz on the background. The buzz has always the same loudness, so when I play my songs hard enough I do not hear it, but when I lower the volume or between songs it is very annoying. I’ve also tried different cables and CD players, but the receiver turns out to really cause the problem.
Is this a known problem for the T751 and how can it be solved?
Please let me know if I need to give additional information.
Thanks in advance,
Tim van Schie
It is a known problem with this model. The source of the buzz is the Dsp power supply. On the DSP board itself there is a 2200my\f/16v capacitor that is defective . Usually the capacitor will turn brown and swells due to overheating. Replace it with a higher temp rating capacitor with the same capacitance and voltage specifications.
Posted on Aug 10, 2010
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Posted on Jan 02, 2017
i have solved thsi problem. The reseller suggested that probably a earthconnection was demaged and indeed that was the problem. by heating the earthconnections, specially the wired ones this problem disappeared.
Posted on Feb 02, 2008
The contacts in the A B speaker selector switch had degraded on my NAD 7130 receiver. Distortion and signal loss would come and go. Contact cleaner and wriggling the swx knob became useless. Then, years ago I jumped the swx with small lengths of bare wire and tinned the whole thing with solder. Never had a problem since and it probably improved the receiver because it eliminated a component in the output stage that could (and did) introduce distortion.
Posted on May 26, 2009
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