But it is confusing until you get time to experiment a little to understand how it all works. My dad had a crummy TV that had only one input, so the cable connected directly to his TV and all he needed to do is to change channels on his TV to watch. Then I gave him my son's old Sony XBR TV that had multiple inputs, and I connected a DVD player. This was very confusing until I had him perform the sequences several times. He had to call me several more times until he finally got it.
Do you have a cable box or is the cable connected directly to the back of your TV? If you have a cable box, then it is connected to it's own Video Input on the back of the TV (Input 1 or 2 for example). When you pressed the channel button on your TV remote, you made the TV change to it's own internal tuner. You simply need to get back to the Input where the cable is connected and all will be fine. On your TV remote, press the button that says "Input" (sometimes it's called TV/Video) and you should see all the options for Inputs. If you are not sure which Input your cable is connected to, just choose one Input at a time until you see your cable signal. If you have a cable box, then you really shouldn't need your TV remote. Your cable remote should have been programmed so it controls the Volume and On/Off to your TV, which is all you need from your TV since the cable box is your tuner.
Yes, it's confunsing to a degree and the manuals aren't really useful n describing how to use everything.
Can't the use of cable, satellite, etc. TV be simplified? Even without a multi-media system they're a nightmare. The worst offenders are the providers themselves. Nobody provides simple step-by-step directions on how to do the basic things, and how to recover once you screw up. I know, to techies such things are "intuitively obvious", much as the math professor says of mathematical problems. But a lot of us are not techies, especially of the elder persuasion, and not mathematicians.
Example: Last night, cable system remote would not successfully effect volume changes. Used TV remote. Worked fine until I forgot I had the TV remote in my hand and used it to change channel. Result was the first number I punched in and snow on the screen. Could not restore. Called cable system this morning and young air head, probably with long straight blonde hair, essentially knew nothing. Promised to send technician today. Isn't this costly to the provider, as well as frustrating to the user?