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NAD 502 playback noise when red wire on ribbon connector is touched. new ribbon wire available? upon opening cabinet LCD bubs also stopped working. Any suggestions on vibration damping (via feet?) Other vintage NAD player model with equivalent or better performance reviews?

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Re: NAD 502 playback noise when red wire on ribbon connector is touched. new ribbon wire available? upon opening cabinet LCD...

Well I suggest you get a new

Posted on Jan 07, 2008

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Nad 502 CD will not recognise and play CD every time

HI.This will occur when the optical assembly becomes unstable. this ((Whole One Piece)), assembly incorporates the spin/load motor, optics housing /arm, tracking device and tracking rail. This is connected to the loading dock assembly. This 'NO Disc' or CD NOT PLAYABLE, code is the result of a failed or burned out lens, or misaligned loading mechanism. It is possible that you have a dirty lens cap. you can try using a cleaning disk in this case to confirm actual lens failure. if the cleaning doesn't restore normal reading capabilities, this will confirm my diagnosis.

You will need to have the optical assembly replaced in this case. once replaced, your unit will be able to read and track once more

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My NAD C251i CD player isn't reading disks - platform stops short

To fix it, you need to replace the spindle motor top bearing. The bearing is worn and the player mistracks as the armature moves about under the changing drive conditions. Makes the player mistrack and skip. Because the disc is spinning fast.

Replacing the bearing should resolves the problem.

Hope this helps and have a great day!

Sep 01, 2009 | NAD C521 CD Player

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Nad cd player cd541i noise

That one is going to need Tech service.

I've worked on several of the NAD players.

Sounds like a focus or gain adjust needed.

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NAD 502 CD player problem

Does it have a failing drawer belt? My 522 was fixed after that.

Jun 18, 2008 | NAD C521 CD Player

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NAD C541i CD Player won't turn on

Hi John,
Coincidentally enough, I have a customer's C541i on my bench right now!
At this point, you will need to open the cover and check the fuses. With the cover off, looking from the front, all four fuses are in the back left corner of the player, next to the toroidal (round) power transformer. If any of them have blown, replace that fuse with exactly its type and rating. DO NOT jumper over the fuse, or wrap foil around it. It is EXTREMELY rare for a CD player to blow a fuse unless there is a very serious failure someplace.
If the player blows the new fuse/fuses immediately it will need to be serviced. If the fuses hold, and the player plays, it was just one of those random things.
Now, IF all the fuses are good when you first check it, you have a mechanical failure in the power switch, or a broken solder joint on the board where it's attached. Luckily, a replacement switch is easy to find.

Apr 24, 2008 | NAD C541 CD Player

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High pitch sound even with speakers disconnected

1.the problem with your audio processing circuits and improper power filter
2. Check audio amplifier coupling capacitors
3. Rectifier capacitors
4. contact service centre

Oct 26, 2007 | NAD L40 CD Player

3 Answers

NAD 502 CD player LCD problem

hey, well, typical problem i nad cd players, and also receivers by the way. The proble are tha nad use standard glow lamps. And as we know, the blow!! And often when you move around with the cd. Well i do have repair note for this one also. go to the menu: 'amplifier repair notes' (yes includes cd players ;) ) Here you can find free amplifier repair notes, an go fore nad 705 repair fix (same fault with defect bulb's as in you nad cd) And also a technical repair movie showing you the hole process of the 'workaround' this fault i NAD 522 (NAD 501, 502, 512 and more) best regards michael miguelovitch

Sep 06, 2007 | CD Players

1 Answer

Laser unit NAD 5100 Monitor Series

Hey, I think you can bye new laser here I have a nad 5300 monitor series, same laser as 5100, you can buy the hole cd player from Laser work, but problems with cd transport. When i 'help' the cd transport, cd play as expected. And i agree, it is a nice cd player, also i have heard lot of nad cds on quad 405, sounds realy good. Try to visit my site, i also have a lot of free schematic for nad, denon, quad and mora. Also repair notes for amplifiers, tech videos, diy schematics and more.. Also at this moment i am working on a new 'nad cd service movie) including cleaning, maintenance, repair and more on nad 522, 501, 502 c521 and more see you best regards michael miguelovitch

Aug 14, 2007 | NAD C521 CD Player

1 Answer


1.due to some short circuit in your receiver circuit has made the fuses blown
2.Replacing the fuses alone does not get solve.
3. Check the reciever power circuit
4. check whether output is being short circuited
5.Contact service centre

Jul 10, 2007 | NAD L40 CD Player

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