Ok, I think my stereo is the Symphony version, it has an integrated 6 disc changer and tape deck. I got into the car this morning and the stereo wasn't working, it lights up, but there is no sound and no display. I've tried turning it on and off and nothing happens, still sits there with the lights on and no display. I've pressed every button, with a quick press and a long press. Still nothing changes. I have just been out to the car to get something and noticed that it is still 'on'. The lights are showing but still no sound or display. Any ideas because I'm stumped?