Be sure to talk to your installer about antennas and maybe a better antenna.
Bob
I'm facing the problem of week or no signals with my TV with all the channels after one month usage.
My TV is working well with USB.
Please help to resolve the problem by leting me know if it is a hardware problem or something elce?
It will be a great help if I can get a solution.

Chowhound
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GameFAQs
GameSpot
Giant Bomb
TechRepublic