NAD Recent Questions, Troubleshooting Help & Support

I would suggest that the fuse in the amplifier has blown. This is usually caused by a bad amplifier component (duh!).

The unusual part of your problem is that sound is being passed. When a component dies, signal stops as the continuity is broken.

Which could also suggest the power supply. Transistors work like relays, you turn on the control signal and the transistor opens or closes. It isa possible that this control voltage is not being passed.


Either way, this will require shop work

Jeff

https://elektrotanya.com/nad_c370_sm.pdf/download.html https://music-electronics-forum.com/forum/amplification/other-amps/920148-nad-c-370-no-sound-from-speaker-outputs#post920172 https://audiokarma.org/forums/index.php?threads/nad-c370-repair.916194/

Contact New Acoustic Dimension direct for free advice and diagnosis. Click Support https://nadelectronics.com/product/d-3020-hybrid-digital-amplifier/ It is a premium amp, you don't want to ruin it.

Check your connections to the plug there will be a little spark. repair it

Solved the recognition of DTS signal issue but the DTS options/settings in the menus are still not appearing - believe the previous owner may have upgraded the software. The solution for the DTS signal recognition was an output setting on the DVD (blu-ray) player - digital output vs analog.

0080 -
0188 -
0333 -
0544 -
0794

It sounds like the DVD region (a setting in both your OS and your DVD hardware) may have been changed. DVD regions are the agreed upon method (by entertainment companies, hardware manufacturers and governments) to limit cross-border sharing of media. Most valid (read: non-pirated) DVDs have a region code. Your DVD drive will only play DVDs with a region code that matches the DVD region code set on the DVD drive.

You didn't mention your OS but if you are running Windows XP then go to Start->Control Panel->System->System->Hardward->Device Manager and find your DVD player. Right-click the DVD player and select Properties from the menu and you should see a properties dialog-box with a DVD region tab. This is where you can change the DVD region that your player will recognize. Be careful, don't play around here, most DVD players have an embedded limit on the number of times (4-or-so) the DVD region can be changed.

Hope this helps.

-Ed

++++ https://nadelectronics.com/software/ https://nadelectronics.com/wp-content/uploads/2017/02/T755-English.pdf

Did you try new/different RCA cables?

Hi Michael, check inside your NAD C542, there are 4 fuses, check that none is open, if all are well, you could have problems with the capacitors in the area of the power supply or in the case of the Transformer If you do not have technical capabilities to evaluate the above, consult a specialized technical service I hope you can solve the problem Greetings Franco Dosil http://diagramas.diagramasde.com/audio/NAD-C542-Service-Manual-Schematics.pdf Hola Michael, revisa en el interior de tu NAD C542, hay 4 fusibles, controla que ninguno se encuentre abierto, si est?n todos bien, podr?as tener problemas con los capacitores del ?rea de la fuente de alimentaci?n o en el pero de los casos el Transformador Si no tienes capacidades t?cnicas para evaluar lo previamente indicado, consulta un servicio t?cnico especializada Espero puedas resolver el problema Saludos Franco Dosil

Hi Michael, check inside your NAD C542, there are 4 fuses, check that none is open, if all are well, you could have problems with the capacitors in the area of the power supply or in the case of the Transformer If you do not have technical capabilities to evaluate the above, consult a specialized technical service I hope you can solve the problem Greetings Franco Dosil Hola Michael, revisa en el interior de tu NAD C542, hay 4 fusibles, controla que ninguno se encuentre abierto, si est?n todos bien, podr?as tener problemas con los capacitores del ?rea de la fuente de alimentaci?n o en el pero de los casos el Transformador Si no tienes capacidades t?cnicas para evaluar lo previamente indicado, consulta un servicio t?cnico especializada Espero puedas resolver el problema Saludos Franco Dosil http://diagramas.diagramasde.com/audio/NAD-C542-Service-Manual-Schematics.pdf

Disconnect all the cables from the power supply Board and measure the output voltages. Connect the cables back one at a time powering down between each one and see what is dragging the power down.

To reset the the T743 hold down the video 6 and the source up buttons for 3 seconds. then power up from the back button

Check the rectifier diodes in the power supply for shorts and look at all the filter capacitors in the power supply. Look for puffy discolored and domed tops. All filter capacitors must have flat tops. Check the windings of the transformer for darkened or burnt spots and test for shorts in both the primary and secondary windings

Use a Credit card ;)

if the power flows properly ,all fuses are okay in side the unit ? may be amplifier circuit is damaged .just remove all the wires of out put speakers,chk the speaker by connecting a normal battery cell 1.5 volt to spkr wires and feel the the sound ,if sound comes by connecting bateery cell, means speakers are okay,chk each pair of speaker wires of ur system,if any pair of wire of speaker has any cut of short connection it will nor let the sound come from any other as well.