Light keep flicking on and off

The problem is likely the actual connection inside the Starmate. It sounds like you have tried alternate antennas, which can only mean the unit itself has an issue. What has likely happened is the antenna jack inside the radio has come loose and is no longer making a connection, in which case it could be repairable. Otherwise there are plenty of other 12v Sirius receivers compatible with the same connections if you are looking to replace the head unit.

you can find the manual here

http://caraudio.manualsonline.com/regman/exit/ct?url=aHR0cDovL3d3dy5hc2FlbGVjdHJvbmljcy5jb20vdGVjaHBkZi9WUjE4NSBPd25lcnMgTWFudWFsIDExLTYtMDYucGRm&target=productDoc&idDeviceType=2402&idMfg=14325&idProduct=215757

Check your antenna wire to see if it is spliced or cut. If you do not recognize a problem still you can usually get very good help from calling Sirius. They have been good about trouble-shooting and repairs.

check control panel for screen refresh rate .and change rate too see if that helps.

http://www.sirius.com/pdf/manuals/ST2-User-Guide.pdf

See page 24 on [or search for alert]. It's taken me a while to find this as I HAD the same problem

My Sirius ST1 receiver froze. It reads "Sirius Radio" with the logs but goes no further in booting up. Any solutions?

Mine did the loop logo as well. I took it aprt and turned on the power and touched one of the chips, it all of a sudden started heating up, I then figured the heat sink wasn't dissapating the heat from the chip. I stuck a square piece of tin foil folded up so that the chip would then touch the heat sink works perfect now

I had the same problem with mine. I purchased the Sirius FM direct adapter and now it comes in crystal clear.

Do you Have the right adapter Plugged in??

Can you see anything on the screen?