I seem to be having the same problem and will send in a request to support. Here is what is going on.

I plugged in the unit and the antenna to the connector, turn on the Empeg, the tuner light does not come on but the player boots up and plays as normal. I took the sled out and checked all conections/wires and they are solid. Since I got the sled from the UK only a month or so ago, I expected everything to be solid anyways. I checked the wires based on the pin out and the proper wires seem to be connected to the proper places. With the sled out, I hooked up the tuner again. Still no power light on the tuner and no recognition from the empeg even though it does boot and play MP3s fine. I still need to run diagonsitics on the boot up in car but so far it looks like a whole lot of dead. Is there anything else I can check before e-mailing support and sending everything back?

Greg