Have you tried connecting the Panny with composite cables to the tv just to check to see if it's actually sending video thru the outputs?
Another thought...if the Panny was unplugged during servicing and the wait for pick up, it may need a channel rescan while it's connected to the antenna.
Dazed and confused over high tech.
Sigh...Concrap. The Internet Overlord Cometh
They're not com-tastic!
In voodoo17's first thread title the model was identified as a DMR EZ 485VK, the Costco/Sam's Club version of the DMR-EZ48VK.
--Benjamin Breckinridge Warfield (1917)