1993 850 has the 6 cd changer in the trunk. Put a cartridge in it and now it is dead. Yes I put it in the right way. No I can't get it out because the unit's green light is out and has no power. yes i checked and the fuse is OK and there is power in the wires.

Any thoughts??

Try sliding a credit car or something like that under the cartrige to get it to pop out.

Also try unplugging it and let it sit for a little while and plug it back in.