My disc is not changing and is stuck ( CHM - S620 by Alpine )

yes buy a new remote a universal duh

You can find the manual here: http://www.alpine-electronics.ru/fileadmin/user_upload/manuals/history_products/CHM-S620/OM_CHM-S620_MB.pdf

sounds like the changer was plugged into the antenna jack of the radio. this means that you can run it through any radio simply by sending a signal to a preset station on the radio and listening to it through tuner. the control unit ran the changer itself. you may be able to obtain replacement cables from pacparts.com

Ok..just happened to me. I'm a tinkerer so it's assumed that everything is out of warranty. The low down and skinny is this. The last disc holder is stuck on the metal changer tab, preventing the magazine to eject. 1. Remove the six screws on the left and right sides. 2. Use a small flathead screwdriver to GENTLY pry off the front Alpine CHM-S620 plastic facia.\ 3. On both left and right sides, collapse and push in the rubber suspension mounts. 4. Carefully remove the vertical/horizontal mount springs. 5. Gently pull off the data cable ribbon. 6. Flip over the changer unit. Use a coathanger to gently push the cartridge back into magazine. **You may damage the cd and last holder. Small price to pay to get things back to working order though. You may also have to wiggle the last cd holder to get it over the metal lip. 7. Reassemble in reverse order. 8. Change out that last cd cartridge so it doesn't jam again. Good luck.

Check out www.crutchfield.com . you can cross-reference your vehicle model and they will show you what is available for your vehicle. They carry a large inventory and I have purchased from them several times.

http://books.jvcservice.com/

Usually an Alpine unit.  Try ebay.

I've got the same problem with my Alpine changer. It seems like a widespread problem, but known cause or solutions.

Dont know Steve, i am no fundi with electronics but could it be that your system is set up for the steering remote, or perhaps not activating because of a wiring or button contact issue ?
Hope you get it sorted out.
Richard.