CD will not rotate.

You don't state the model, so we are running blind here. It should be fairly obvious. For the CD press the CD button. Then press the door button and put the CD on the tray. Then press play or the door button again. If the CD player works it should play the music. Same with the cassette. Drop the cassette into the holder, push it back in place then press play.

Well if you want to DIY you should open the coves, spay some oil on the mechanics and ensure they are running smoothly, if you spray grease on lens you will damage it, be careful.

there are a few different systems that they use but most are like a cassette player that is spring loaded and the door will open with out power and you can remove the tape if its like a CD system same rules applies unless it is a sliding tray like a playstation 3 uses or a CD player in most HI FI systems you need power to eject the later

elsombro is right. There is a little whitish plastic square on the right side of the player, part of the DVD assembly (after you take off the cover). It's about 1/4 inch square. With the unit turned on, push that square with a pen about 3/4 of an inch in or as far as it will go. There will be a clunking sound but that is the sound of the DVD being released back onto the tray. Now gently push the back of the tray forward, ejecting the disk manually. Take the disk out and then press the close button. If the door doesn't close, it's out too far so manually push it in about an inch or so and then press the close button again. Should be fine after that. I think my problem was a DVD I recorded on my computer and it has the wrong format or something. After I got it out I put a regular DVD back in and everything was fine.

I have the same exact problem with my Onkyo C-707CHX and I found a solution that doesn't involve jamming any screws or other metal objects into your cd tray (which could most likely just cause more damage). This way seems a little safer: Power on your device and hit the open button. As soon as you hit the open button quickly push slightly with both hands on both sides of the cd tray that should be opening. You should hear the trays moving around in there and then you have to try to feel for a slight push from the tray. As soon as you feel that slight push, take your hands off of the tray and let it come out. This has been working for me for a while now (and hopefully will continue to work until I take it to get fixed somewhere). The only issue I have run into is that my "Disc 1" open button doesn't work with this method. So I just use this method with disc 2 or 3 and then once it's open I can hit the disc 1 button to get to that tray. So if it doesn't work with one tray, try the other two as well. Hope this helps.

Remind granmama to put the CD's in right side up.

the tray should have a micro switch to touch when its closed. maybe it needs some fine adjustment. if it doesnt say closed then the laser drive wont start. or maybe the magnetic clamp hasnt come down onto the disc properly

my cd player will open and rotates but will NOT play, can anyone help me?

Seems like the Timingfor the Tray Open / close has got disturebed. Could be a bad drive gear, or as simple as a loose Drive belt. Get it checked by a professional.