NAD Audio Players & Recorders - Answered Questions & Fixed Issues

You have a fault in the power amp. Identify the faulty channel by following the input leads. As, a stereo amp is basically two mono amps put together. You can compare the bad channel with the good one. First thing to do is a visual look around. If you see something odd looking in one channel and it's the faulty one, compared with the good channel, you might have found the cause. Look at the devices or device on the heatsink especially. If nothing stands out, the next thing to do is test the channels. You can do this in two ways. First, by touching the parts on each channel (with power on) with an insulated screwdriver. If you get a buzz in one channel and nothing in the bad one, in the same places of course! You might have located the faulty device. You can do the same with a volt meter. The readings should be the same in each channel. Work forward from the end of the preamp stage. Don't bother with the power supply parts, as they are common to both channels. By the way, don't short anything!

Distortion is categorized in Hum, Motorboating etc. Anyway see page 9 of owner manual for help. NAD C325BEE AMPLIFIER OWNER'S MANUAL ' ManualsLib For further help see page 24 of Service Manual NAD C 325BEE SERVICE MANUAL Pdf Download ' ManualsLib

I have nad t748 but not switching on the power on tha auto turn off

It is funny, I was just reading an article today about New Acoustic Dimension Cassette decks saying they were top of the line and equal to Nakamichi. The most likely reason is that the volume control needs cleaning with Electrical Switch Cleaner. You would have to remove the case and look. It is worth a quick spray. This says it has a motorized volume control. https://www.google.com/search?q=nad+1600+receiver+volume+on+high+volume ..

If I torn off the Nad 755, the setings on the osd menu is gone ! What I van do ? sorry for my english

You can find volume and balance control components for the NAD 1300 preamp from a variety of sources. You can check with NAD directly, or look for parts on websites such as eBay or Amazon. Additionally, you may be able to find parts from audio/electronics shops in your local area.

Yes, the Bose user manualhttp://worldwide.bose.com/axa/assets/pdf/owner_guides/StereoSpeakers/901vi_guide.pdfsays that any amp with 10-450 WRMS is OK. The speakers impedance is given as 8 ohms, so the amp is compatible.Note that Bose say you have to have the Bose equalizer connected as well.

NAD (New Acoustic Dimension) was all the rage when I was into composite audio in the 1970s. Not sure why would want to tweak that sweet clear natural sound like the performers played it. Your problem will be that you are loading an amp to a pre amp. https://www.google.com/search?q=Nad+2600 https://www.google.com/search?q=Nad+3020 https://www.google.com/search?q=nad+3020+nad+2600+graphic+equalizer ..

Does it occur on both channels at the same time, (power supply) or independant channels, (coupling capacitor).

It could be entering protect mode because it has no speakers wired to it, have you tried connecting to all 6 speaker - out connections. Often, if an amp can't detect a load on all 6 channels it won't work. Also, have you checked the thermal fuses? a blown fuse could cause this problem.

Ref NAD C272 Power Amp how do I connect a ground Wire to this Amp this amp has only got a 230 Bolt 2 Prong Plug. There is no 3 Rd Earth Prong .and when my amp is on get high pitch Noise on my speakers. I need to ground this amp how do I do this. Please Confirm

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.

click this link

... http://www.thefind.com/instruments/info-rotary-knob

Bad connections along the front PCB.

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

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?