Well, I finally had success the next day, getting back to being able to view our regular cable programming channels. After live chatting with a samsung tech support guy for half hour late Friday night, and he saying I needed a samsung remote (which I had lost in a move two yrs ago), so I could use the "SOURCE" button to go between cable and HDMI, etc. So I called Best Buy the next morning (Saturday) to see if they had it they only told me they have "universal" remotes. I went there in the evening. Store guy said I had to get the programmable remote but then he showed me the buttons on the back of the samsung tv's in their store that work also as a "source" button! I had never seen a power button or any other button on the back or along the bottom of our tv, so I bought the $76 remote and on the way home, my spouse says "lets look at the user manual again to see if there are buttons somewhere we couldn't see. We figured out that the front of the tv at the bottom right there has nothing written there, just...