You are not helping, are you? You don't mention the make or the model of the TV.
Find these then, for goodness sake, help yourself. You should be able to download a manual off the makers website. If not - it may be a cheapo store in-house brand - you may have some luck asking here.
Find the manual then read it
Allan
August 2010
Automatic Answer
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Try fixfault.com to fix dtt receivers.