Here is the owners manual ,
http://www.managemylife.com/manuals/...M/engPC5RV.pdf , does not say any thing about a digital Tv tuner. I recommend call and e-mail LG. If the Tv does need a external digital ATSC tuner then here are the best ones. Some of these boxes have HDMI output and some do not. The LG tv has HDMI input , but need not use the HDMI. HDMI is the highest quality picture but you do not have to use it.
http://forum.tvfool.com/showthread.php?t=380 Component video will also produce a high quality picture.