Source has to be set to antenna, and you MUST have an antenna attached to receive any channels. Scan for channels
I purchased the LN40a650 television and am not receiving ANY OTA HD Channels. I also have two other hdtv's. Both being VIZIO and I am receiving OTA HD channels, but with my LN40a650 I don't receive any. T.V's are in the same location and I have moved them around, still only the vizio's receive the HD content. Does anyone know why this is?

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