My Roady XT will not turn on either with the remote or manually pushing the power button. It will turn on then right back off . If I hold the button down on the remote it does its on/off about every 4 seconds

change the battery's or charge the battery

yes. Just plug in the antenna from the XT base into the Onyx base, plug in power and activate!

one of 3 things, either your antenna is not insight of a skies view to receive the signal, or its wire is broken at the antenna, but if you remove the antenna connection frequently it pulls the center wire out of the connection on the end that fits into the radio when its plugged in push on the conductor at the back of the plug and see if this helps,alos if connection is loose take a safety pin and carefully between the outer plug case ans the ground fingers around the center pin push these in so you get a better ground, and lastly try another substitute antenna, I have re-soldered my connections numerous times to fix this issue, delphi doesn't make a very rugged product, good luck

I had exactly the same problem with my Roady XT. The power supply gradually failed, with the symptom that the reception kept getting weaker and more spotty. Finally, the Roady would not turn on. The screen flashed as you describe. I happened to have another 5VDC, 2A power supply in the closet from some other electronic gismo from the past (I save the power supplies just in case). the connector on the old power supply was not correct for the Roady XT, but a little surgery put the new plug on the old supply... (verified by a volt meter). When I plugged it in the Roady quickly turned on and showed full signal strength. This had never happened in 2 years of use. Apparently this radio needs more power than the stock power supply can provide. Now it "loads" stations in 2-3 seconds and never fades.

there is a bad connection on the voltage input on the radio. look in the hole you will see a copper contact if it wore, you will see a hole in it, you needed to bend it towards the center contact just a little bit. then try it again I worked on mine

i figured it out with help from a delphi service rep.! you need to go into the menu and reset to factory default.this will erase everything you have changed from the factory settings,but once done you can reprogram your settings and they will stay. step 1-enter menu step 2-reset factory default settings step 3-reprogram your preset stations,FM freq. colors etc. step 4-use power button on the roady to turn it off.once the roady shuts down turn it back on with the power button. step 4-now you should be able to turn the key off without erasing your presets.

Won't turn on just flashes, tried a sister unit from truck and it works fine.

You need to replace the transformer that plugs into the wall.

Same here, it's nice to know I'm not the only one with this issue at least; but as to a way of solving this, I've found nothing.

I had the same problem with all three of my Roady XTs. I posted a video with directions for solving the problem on YouTube:

http://www.youtube.com/watch?v=BGMWf0aUTjw

Basically, you just need to have the antenna unplugged when you power up, and push menu right away, then select. Not sure why, but it worked on all of my Roady XTs. On the oldest one I had to push menu more than once. Good luck!