Poor picture quality on my new LCD tv
I recently purchased a Toshiba 42" LCD TV (42HL167), and while most of the channels look fine, some of the local SD channels (channel 4 in particular) look terrible and have intermittent sound (no sound most of the time on ch 4).
I live in Nashua, NH and have standard Comcast cable that I have connected to the tv from the wall jack.
I understand that some HDTVs do a poor job of displaying Standard Def signals and my new tv is probably one of them.
Before I upgrade to digital cable or HD cable, I'd like to find out if either option will clear up the local SD channels.
Has anyone purchased a HDTV that had poor reception, but was cleared up by upgrading their cable to digital or HD?