SOURCE: Does not respond to remote control
I have had the T743 for about three years now. The first unit which I got from the local shop was doing exactily like your described after couple of minutes use. Well, I took is back and got a new one covered by the warranty.
Unfortunately I never got any explanation to this problem from my local shop or anywhere else, so I guess the only way is to contact your local shop.
SOURCE: Nad c350 no power at all
check your output stage for bad speakers cable or bare wire of cable touch the body of amp----short circuit speaker cable----bad speaker it self------ bad input cable or defective input device .
disconnect all and check if it is ok---start to connect one by one from input to outputs------if all above failed you must contact service center for help.
SOURCE: I have just bought a
Hello
You have replaced your old NAD 3020 with NAD C326BEE. You are using the old speaker system with the new NAD 326 too. The Amp you replaced [NAD 3020] have only 20W/channel output power, and the present NAD C326BEE has a rated output power of 100W/channel. Both specifications are for 8Ohms speker impedence. Your old speakers haven't got the power handling capacity for the new Amp. That is why you hear it very clear at low volume levels and disorts at high volume levels. Distortion is not due to the Amp, but with the speaker you uses. You have to replace either speaker system or the speaker in which your old speaker box is fitted, with a new one, whcih can handle the power of the present Amp. OK.
SOURCE: NAD 3020 amplifier cuts out
Swap the speakers to see if it correlates.
Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.
SOURCE: my nad 3020 is making
It's the muting circuit that is not operating properly. Usally it's enough to change C533 (47uF/50V). Sometimes C531 and C532 also need to be changed.
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