Help? KTS-MP400MR no longer seeing Sirius ..

Hey all,

Last time I went to the boat, the Kenwood head unit in the boat no longer switches to the Sirius receiver.

I tried making sure all the cables are still attached at both ends, I pressed
the reset button on the HU - but I don't really know if that did anything and I still can't see the satellite.

There is no fuse, it seems to be powered thru the HU ... Oh, and because the "CD -Changer" (which is where the in headphone jack for the iPod) is daisy-chained to the satellite, it won't switch to that either.

Seems like the Sirius unit might be dead -- any ideas on what else to try?

Thanks in advance -- I don't use this much around home, but use it at Lake Powell where Pandora on the phone doesn't work, or the iPhone play lists get old.

Todd

Anyone? .