[gmcenroe]

I have a NAD C370 integrated amplifier that I bought new 5 years ago. I
am using Danish System Audio 1250 tower speakers with this amplifier.
Lately I have noticed then when I first start playing music that the
right channel is silent at low volume. In order to get the right
channel to play I have to crank the volume nob up sharply and then the
right channel plays. I can then turn down the volume and everything is
fine. What is the source of this problem?

Thanks for taking the time to read this post and giving me some advice,

Glenn

[DJBohn]

gmcenroe wrote:
I have a NAD C370 integrated amplifier that I bought new 5 years ago. I
am using Danish System Audio 1250 tower speakers with this amplifier.
Lately I have noticed then when I first start playing music that the
right channel is silent at low volume. In order to get the right
channel to play I have to crank the volume nob up sharply and then the
right channel plays. I can then turn down the volume and everything is
fine. What is the source of this problem?

Thanks for taking the time to read this post and giving me some advice,

Glenn

Glenn,
I had exactly the same problem several years back with a Proton
AA-1150 DMC power amplifier. What the problem turned out to be was the
input relays. If you use your integrated amp a lot, these relay
contacts will sooner or later carbon up. If they can't be cleaned
(which they are usually sealed) they will have to be replaced. Sorry -
you'll have to bring it into a shop for repair.

[Peter Wieck]

gmcenroe wrote:

In order to get the right
channel to play I have to crank the volume nob up sharply and then the
right channel plays. I can then turn down the volume and everything is
fine.

Welcome to the world of NAD. It sounds like you have an intermittent on
the VC wiper (or stepper) contact. When you "crank it up", you remake
the contact which then holds for some period of time.

I have heard-tell that the volume control on this particular model is a
bit flakey, which would not surprise me one bit. Somewhere also, I came
across an individual who replaces them with one of "better quality",
perhaps if you do a search of that unit and that problem you will run
across that person.

Good luck with it (and with anything NAD as it happens).

Peter Wieck
Wyncote, PA

[DJBohn]

gmcenroe wrote:
I have a NAD C370 integrated amplifier that I bought new 5 years ago. I
am using Danish System Audio 1250 tower speakers with this amplifier.
Lately I have noticed then when I first start playing music that the
right channel is silent at low volume. In order to get the right
channel to play I have to crank the volume nob up sharply and then the
right channel plays. I can then turn down the volume and everything is
fine. What is the source of this problem?

Thanks for taking the time to read this post and giving me some advice,

Glenn

Glenn,
In addition to what just said, I am assuming the pre-amp and
power-amp stages in your integrated amp are seperated internally
allowing your to use either section independently via 2 pair of RCA
jacks in the back - normally strapped to each other. I'm not sure if
the power stage would have input relays or not. But what ever the
problem is, it sounds like something you should let an electronics
repair shop fix.

[---MIKE---]

I have the same problem with my Sony 6 channel receiver. I only use it
for surround channels. When I first turn it on, sometimes the right
surround channel is "dead". Cranking up the volume brings it back to
life. It has been like this from day 1. Sometimes the center channel
is weak also.

---MIKE---
In the White Mountains of New Hampshire
(44° 15' N - Elevation 1580')

[Harry Lavo]

"---MIKE---" wrote in message
...
I have the same problem with my Sony 6 channel receiver. I only use it
for surround channels. When I first turn it on, sometimes the right
surround channel is "dead". Cranking up the volume brings it back to
life. It has been like this from day 1. Sometimes the center channel
is weak also.

---MIKE---

Frankly, cheap pots with flimsy wiper blades will do that. So will dirty
pots. It doesn't have to be a relay, as stated here in another post. I'd
suggest cleaning your volume control as a simple step that might fix the
problem.

[---MIKE---]

Harry Lavo wrote:

Frankly, cheap pots with flimsy wiper
blades will do that. So will dirty pots. It
doesn't have to be a relay, as stated
here in another post. I'd suggest
cleaning your volume control as a
simple step that might fix the problem.

My Sony has a volume control on the receiver but I control the volume
from the remote. The control on the unit is not motorized so the remote
controls the volume electronically.

---MIKE---
In the White Mountains of New Hampshire
(44° 15' N - Elevation 1580')

[Jerry]

"gmcenroe" wrote in message
...
I have a NAD C370 integrated amplifier that I bought new 5 years ago. I
am using Danish System Audio 1250 tower speakers with this amplifier.
Lately I have noticed then when I first start playing music that the
right channel is silent at low volume. In order to get the right
channel to play I have to crank the volume nob up sharply and then the
right channel plays. I can then turn down the volume and everything is
fine. What is the source of this problem?

Thanks for taking the time to read this post and giving me some advice,

Glenn

Glenn, hate to add to the list of potential problems, but old blocking caps can
cause this as well.

What happens is they won't conduct until you hit them with some voltage, and
then they start working. Problem is that these old caps will also cause
frequency response problems. So the best solution is to track down where the
signal is lost and then replace.

Regards,
Jerry