Replying to WTF - I need someones help with our TV's

Ok so we moved into our apartment about a week ago. We got the tv from insight hooked up last thursday, and the guy who moved in brought a tv. Somehow that tv got messed up and when it was turned on it looked like you were on acid and none of the buttons would work. Couldnt even turn it off with out un plugging it. So I brought down a tv when I came on friday, got it plugged in and started watching some tv. I notice thats theres lines going down the tv, kind of like what you see on the news when they point a camera at a computer or tv except they werent black.

Then my parents bring down tv number 3, on saturday. We unplug two, and plug in three. Shortly after the tv starts to flicker and the colors would change around. Nothing too bad, but certainly wasnt working right. Then on monday the last roommate brings his tv down. Plus it in, works fine monday and tuesday, then today it just started randomly flickering and turning off. We used to be able to just turn it back on, but after this process for 10 times, it no longer turns on.

Now none of these tvs were brand new or anything, but theres no fucking way 4 tvs all decide to suddenly crash and burn within a week. The two that I brought I never had any problems before plugging them into the tv hook up here. I plan on calling insight tommorrow and trying to figure out what the fuck is going on, but I doubt they will help at all..Does anyone know what the fuck is going on?