Dn-s3500 cd stuck

Hi, firstly check that the discs are not too scratched and be aware that CD's read and play from the inner diameter to the outer diameter. CD players are really finicky devices that can be affected by the slightest bump and also temperature and humidity changes. Sometimes decks have a humidity sensor embedded in the circuitry. So, all that being said, firstly just turn the set on and let it sit for a while to heat up and dry out especially if it hasn't been used for a while. Then, take the lid off and check for broken drive belts that actually spin the disc. (You may be able to hear the disc spin without the top off). After that the laser itself will have to be cleaned, adjusted and the current checked. Lasers do wear out and sometimes increasing the current to the laser will make it read for a little while longer. You will need the schematic diagram and some decent equipment and knowledge to achieve this though. Since they both don't work, and you got them for free, they might be good experimental pieces but, in my experience they are never 'time' worthwhile repairs. Good luck. Cheers

If it is with all clean cd's then it can be a dirty lens which you can buy cleaner for, but i've read the manual and was dated 1993, so if a cleaner not helps , it's the unit itself and time for a new player. Parts are very expensive and it's one whole unit..... I think it's the end.

Greetings richard

http://www.djresource.eu/News/news/133/New-Firmware-Denon-DN-S1000-3500-4500-6000/

if this is a CD that gets plenty of play, (take a dry paper towel, going in one direction in a circular motion wipe the CD)

hi if you have tried cleaning the lens gently .. then ... on these models the laser OPU oftern fails . so you will need to change the laser ..when you say will not read the cd does it try to spin or just sits there doing nothing.. i can provide replacement laser and service manual if you require them...yammandan

clean the lens...if it does not work replace the lens.

I'm having a similar problem. Basically I put it a disc, and the song titles show up, but it takes over a minute for an actual song to load. I don't have a solution, but I am in contact with Denon, and they're, so far, pretty cooperative.

HI...

There might be a round access hole on the bottom of the case with a symbol near it.If it does , turn the screw down inside. Many CD players have a Panic hole like that.

HI,

Please reset the unit for 4 hours by unplugging all the cords,even the power cord from the unit and then plug them back again after 4 hours.Now try ejecting the disc.Let me know the result.

Sounds like it may need a motor calibration. You would have to seek out an authorized service center to this adjustment done. It's a quick and easy fix though.