It's nearly impossible to properly diagnose a television without being able to look at it. It does sound like one of the boards isn't working properly, but I can't answer definitively which one. I'd recommend you have it looked at by one of our authorized service centers.
Keep me posted.
when i turn on the power i can hear a click in the back and the screen lights up with multi colored vertical lines with no picture behind and no sound. is this the T-con board ? have heard different stories