The TV should work just fine... Two things off the top of my head
1. Try going into TV setup and make sure it's configured for off-air antenna
(and not cable), then tell it to do a channel scan.
2. Is the new TV ATSC/digital TV compatible? I don't know where you are, but in the US the transition to digital TV has finally happened in June. I don't know if you had a converter box for your old analog TV, or maybe that was before the transition? Or maybe you aren't even in the USA... But, something to keep in mind.