Maybe. But the TV is irrelevant to the need for a TA.
Who is your provider? And are you receiving all the channels in your TV package without a TA being present?
edit: See also: TiVo FAQ: How Switched Digital Video Impacts Me
Who is your provider? And are you receiving all the channels in your TV package without a TA being present?
edit: See also: TiVo FAQ: How Switched Digital Video Impacts Me