So out of the blue, my two year old LG 42" LCD has a problem. The screen either doesn't come on, or gets multicolored lines, etc on one half. If I go up to the Tv and gently tap the case, I can get it to stop and work flawlessly for hours. I have the TV hooked up to a power strip This past friday, my father in law and I were working out a short circuit in the house that killed power to some rooms- rooms on a different breaker than the TV's room is on. As he tested breakers, and before I could stop him, he grabbed the TV room breaker and toggled it back and forth several times to my horror. I told him "STOP!" and told him I had my computer modem, TV etc all hooked up on that breaker and toggling it was bad for them. The following day is when the TV started acting up. The following monday, we had storms and the power went on and off and on several times. Could this repeated on/off of power damage my TV? Or has it just coincidentally started going bad? I've read that there is a rare loose something or other that can create the half-black screen.