Question about NAD C370 2-Channel Amplifier
The sound from my NAD C370 has just lost quality and is distorted even at very low volumes - I suspect this is the result of a combination of stupid errors by myself today.
I was intending to connect a recorder (hard disc) to the tape 1 out socket (so I could record onto the hard disc).
I had not conected up to the hard disc but I did connect the phonos to the NAD - unfortunately by mistake I think connected to the pre out 2 sockets rather than the Tape 1 out socket and yes I then noticed I had knocked the amp back on while I was grapling around.
Would this have led to my sound problem? and how easy/difficult is it to repar or have repaired. Your advice will be greatly appreciated. Best regards. Nick
As a way of explanation of what occurred here, let me describe the circuits involved.
1) By connecting the tape output to the pre-amp in, you basically connected up a loop.
2) The pre-amp out is isolated from the output amplifier so the problem you are having is not in the output amp, but in the pre-amp section. The protection relay does not figure in here. IF it did, you would have no sound at all.
3) The NAD designs are such that the pre-amp section has a number of feedback loops to improve sounds quality and are not the easiest to repair without previous experience.
Bottom line here is that the parts cost for this repair will be in the $10-$20 range only. It is this high mainly because of the feedback design which for overall quality concerns requires that more parts be replaced not because they have failed, but because they have been stressed because of the failed parts.
Posted on Jun 06, 2008
Well..my input on this, is that ID, who's really talented at this, has provided a complete review and helpful solution.
i'd give him the fixya back, if I were you
Posted on May 25, 2008
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..
Posted on May 25, 2008
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Posted on Jan 02, 2017
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