My sony lcd tv is carcked there black and white horizontal lines and colourful lines vertically alligned to the cracked rest the vision is clear and everything is normal the sound is perfect too
If you mind the lines and if they are too big replacing the screen will be very expensive and there is no way to repair your current display. The way I see it if you pay more 65% of the current value of your TV is too much. You may be able to find a new TV for as much as the repair cost.
I had one broken a few months ago. I got a couple quotes to repair it.. it was about $200 less then a brand new one. I'd just buy a new one.
For the new TV I'd pickup a screen protector for it. My son threw a toy at my TV the other day and I nearly had a heart attack from the flashbacks. Thank God I picked up one of these a few weeks earlier. It stopped it. LCD screens really break easily as you know. http://www.tv-armor.com
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