Today I hopped in the car, started it up, and connected the faceplate to my Kenwood KDC-X659, per routine. I didn't have my empeg with me because it's such a short drive to work, I stopped bothering.

I use this CD Receiver mostly as an amplifier for my empeg, by connecting the empeg's front outputs to the Aux In on the back of the Kenwood. So the Receiver started up in Aux, since that's where it was last time, and I promptly changed the source to FM, to listen to the radio on the way to work.

Five seconds later, it shuts off. No button press on the faceplate gets a response. Removing the faceplate and pressing the eject button causes the appropriate mechanics to move inside, but otherwise it will not operate.

Before I start troubleshooting tomorrow morning, are there any simple things that I might check first?