All channels and DVD play. But white horizontal, zig-zagging lines run across the screen. There are about 14 bright white lines going up from right to left and 14 faint lines connecting the bright lines. The lines are slightly concave in the middle of screen. I think I heard a slight pop or crack when the lines appeared. The TV is 3 years old and I am out of warranty. Is this a possible/ reasonably priced fix or should I get a new TV.
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you start with the broad zig zag stitch bar across the top then you go down the left side using a smaller zig zag stitch then you make the the broad zig zag stitch at the bottom then you make the smaller zig zag stitch on the right side all the way to the top broad zig zag stitch & your done the right side zig zag does not go beyond the top broad zig zag stitch
you must open the back cover of tv, and then things you should do is set "SCREEN" adjustment on the flyback transformer. you must turn it counterclockwise to reduce and decrease the level of screen brightness. turn screen adjustment gradually until the horizontal blanking lines disappear from the screen. and blurred images will be sharp again
If it is a horizontal line is straite or zig zag, if it is straite then problem in your vertical section,please check the supply of vertical section or output ic of vertical, if it is zig zag line then it could be dry solder in the yoke connector or vertical yoke open, please let me know the vertical ic no.