I've got a 02 172 with the standard alpine 6cd changer under passenger seat. Up until about 2 weeks ago it worked fine but now it won't play any cd's. It has power cause i can hear it trying to work and on the dash display it says something like CD LOAD but never loads the cd just keeps flicking through them 1-6. I can eject the cartridge with no problems and everything looks ok. Has anyone had or heard of this problem any feedback/advice would be fantastic cheers