Question about NAD C340 Integrated Amplifier
Some years ago I sent my NAD C340 away for repairs under guarantee. It kept cutting out and wouldn't switch between inputs. It wasn't repaired properly. When I got it back it had a horrible fuzzy noise in the right channel. I sent it back for repair through the retailers shortly before the guarantee expired. But it was again sent back with the same problem. I phoned NAD customer services. The man I spoke to was very unhelpful. He told me they were not going to bother. After being left unused for some years I took it to a local repairer. He isolated a transistor which needs replacing, but after searching he said he couldn't find a replacement. I only got about a year's good use from that amp. I am furious with the NAD UK distributors of that time - Lenbrook. The transistor spare part needed is 2FA949. Why should NAD make amps which become obsolete so soon? Any other solutions?
Odd a transistor would have such a #. No 2Fanything series. It is most likely a 2SA949.... a PNP audio driver transistor.
It can be replaced by a NTE-383 (ECG383) transistor, though it's best to order the original # from a Japanese semiconductor supplier like MCM in Ohio.
It's best brought to a good hi-fi or guitar amp repir shop for a proper go-thru & repair.
Mark S. CET Sr. Dover, NH
Posted on Nov 07, 2008
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Posted on Jan 02, 2017
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