You say your parents aren't planning on a cable box for this tv, but you have coaxial hooked up to it. Is it just basic cable? If so,you're not going to "search" for channels,on source,just select cable and make sure the tv is on channel 3 or 4 depending on your location. If you're looking for over the air channels,you'll need an antenna instead of the cable, then search for channels over the air.
I just moved my samsung HD TV to my parents house for their spare room. They are not planning on using a cable box on this set. I am having trouble setting up the TV. The coxial cable is plugged into the television but the set is not finding any channels on during the set up search. The tv that was there prior to this one worked fine. Am I missing something? or is the cable signal just not strong enough for the HD TV?
The TV is a Samsung 42 inch PLasma Model HD S4253 model code HPS4253X/XXA