My NAD cd-player has locked it self! I cannot play the cd's or even open to take the cd out. What can I do? Marit

The blue lines you mention should flash when trying to find
the 'Table of Contents' of your CD, even if a CD isn't loaded.
If when a CD is loaded and these lines flash for a while without
any CD info e.g track no. / disc length then it's more likely that a problem has occurred with the laser.
Various NAD CD players use the Sony KSS-213 Laser unit
and for some reason particularly with NAD CD players, they tend
to drift out of calibration over time so what i usually do when i come across this is very finely adjust the pot trim on the laser itself and testing a CD between adjustments.

Hello
This fault is due to loose tray loading belt or weak loading motor. You just change the loading belt with same type. Never use a belt more than tight. Use the same size. If belt changing does not help, replace the loading motor. OK.

It could be the belt for the tray mechanism. Tray closes then motor is pushed up to CD. If belt slips or physical mechanism is sticky CD will not spin and tray will reopen.

Those CD cleaners rarely work. They are nothing but small brushes on a plastic CD. Unless the problem is loose dust, they won't work. Try carefully opening up the unit and cleaning the lens using a cotton swab and alcohol. If that does not resolve the problem, post the model number and I'll provide the replacement optics part number and cost. Some units have replacement optics that cost less than $15. Dan

Hi...
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.

hi, i've had a few nad C541i's and not so long since the sound on one of them cut out for milliseconds and on some occasions the sound would make the noise very much like a severely scratched vinyl record, i thought it was a faulty laser so i tried another KSS-213C laser out of a scrap kenwood and the fault persisted. to cut a long story short, i took the main PCB out and there were various dry joints. once these were resoldered i was blessed with a fully functioning player. hope this helps?

I FIX MY NAD 5000 CLEANING THE LASER LENS USING COMPRESS AIR

Could be some dirt on laser lenses. Try to clean it.

Hey, I think you can bye new laser here http://www.pltv.org.uk/laser.htm I have a nad 5300 monitor series, same laser as 5100, you can buy the hole cd player from http://www.miguelovitch.dk 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 http://www.miguelovitch.dk

This will fix it.........

http://www.dvdcodes.net/newCodesAZ/codesN/NAD/NADT562.php