This began about 3 weeks ago on my LN46C750 TV. It's about 11 months old (whew). The screen image began a smooth, high frequency flicker effect, like an old style movie. It began with scene cuts, like to a commercial, and persisted until the tV was cycled off/on. It got more and more frequent, and then all the time, regardless of the source of input, and regardless of settings. Then, the right side of the screen darkened, and finally the whole thing went black. There was no sound effect, and sound remained normal to date. Also, no effect on Cable box upgrade or on modifying the cables. This appears to be entirely within the TV. Other posts suggest it may be due to the video power board. I'm expecting service on it this tuesday, and hope it's an easy fix. If it's that capacitor thing, I'd be surprised as there is no clicking thing going on, and the image had degraded in steps, not all or none. More data to follow.