NAD Audio Players & Recorders - Recent Questions, Troubleshooting & Support

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NAD 5425 CD Player display light out

Hi aartman

Yes it does have backlamps.

They are soldered to the PCB so you will need a few tools like a soldering iron, philips screwdrivers, solder, and some replacement lamps. Replace the lamps with this type from Farnell electronics. They have a 15000 hr life expectancy and last alot longer in the unit. I have tried many types of lamps over the years, and found these are the best choice if you want them to last.

FOR YOUR SAFETY-BE SURE TO DISCONNECT FROM THE MAINS BEFORE REMOVING THE LID

To get access to the lamps, you need to pull the main PCB out of the chassis to then get access to the bottom side of the printed circuit board where the 2 screws that retain the white lamp reflector assembly. Change both lamps with the type I mentioned,
6ab9edb.jpg Be careful not to flex the LCD display that is now exposed, it is quite fragile with the support of the lamp reflector cover no longer in place. ... reverse procedure to reassemble and away you go.

I am more than happy to talk about this solution with you further. Just ask away. Cheers

regards
robotek
10/3/2021 4:04:40 PM • NAD Audio... • Answered on Oct 03, 2021
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Nad t753 volume control knob doesnt work

I'm going to assume that you mean it jumps around, volume up/down by itself? If so, you have a bad rotary encoder. If you are interested in having your NAD repaired, please visit my website at audioserviceclinic.com. You may contact me there. Thank you.
9/13/2021 12:24:27 AM • NAD Audio... • Answered on Sep 13, 2021
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Intermittent Volume Control

9/13/2021 12:09:47 AM • NAD T743... • Answered on Sep 13, 2021
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How to reset a NAD L54 DVD reciever?

This is the technical solution, you have to open the unit:Locate IC33 and connect pin 6 to ground, connect power, and then remove the ground connection at pin 6.The unit will then boot up in factory default.Henrik Pedersen
4/13/2021 5:28:32 AM • NAD Audio... • Answered on Apr 13, 2021
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My NAD T750 will not power up unless I tilt it on its edge. Then all controls are working.

Bad connections along the front PCB.
2/7/2021 4:36:36 PM • NAD Audio... • Answered on Feb 07, 2021
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NAD C370 problem

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
1/31/2021 11:55:16 PM • NAD C370... • Answered on Jan 31, 2021
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NAD T163 LCD display going in and out

Check your connections to the plug there will be a little spark. repair it
6/20/2020 6:04:38 AM • NAD Audio... • Answered on Jun 20, 2020
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Preamp/Processor missing menus/options for DTS

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.
2/21/2020 7:30:31 AM • NAD Audio... • Answered on Feb 21, 2020
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The DVD player does not recognize disks that it used to play before.

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
10/28/2019 9:52:17 AM • NAD C541 CD... • Answered on Oct 28, 2019
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NAD C542 does not turn on. How to fix it?

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
9/16/2019 6:16:23 PM • NAD Audio... • Answered on Sep 16, 2019
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My NAD C542 CD player does not turn on. What can the problem be and is there a fix?

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
9/16/2019 6:12:05 PM • NAD Audio... • Answered on Sep 16, 2019
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OVER HEAT

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
8/14/2019 10:30:49 PM • NAD T743... • Answered on Aug 14, 2019
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I have a NAD T-753 receiver that is about 13 years old. It shuts down immediately after I turn it on. Replaced a blown fuse and tried hard reset, neither helps. Help?

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
7/24/2019 7:40:02 AM • NAD Audio... • Answered on Jul 24, 2019
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