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Horizontal lines on screen and 4 inches of left screen blacked out

TV has sound and picture but there are little black lines on the top of the screen like three bold black lines in the mid bottom screen and it looks like the picture doesn't go all the way across to the left side of the TV screen. What causes this?

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Hi,

I would suspect the driver board. Since you have a decent picture there, what's missing is the entire signal being sent out. That signal gets split into lots of ribbon cables at base or top of LCD panel and they then power the strips in the LCD.

One thing you could try to verify if ribbons are loose/bad or if video driver board is bad is grab the display at opposite corners, like left top and right bottom and slightly twist the case. If the display changes, gets better/worse, then the ribbons are suspect. If no change, then I would proceed to the driver board.

My bet is the board. Rare for those ribbons to come loose.

Mike

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I already changed the logic board. I will try to readjust the ribbons the tv screen did fluctuate when I flexed it.

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What wood fry a ribbon on the botom of t con board. I plugged it back in and turned ot on and smelled smoke......?

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Did you reassemble the case? Maybe a cable got stuck and a screw went through it. Check all the cable routes. There should be no real power going to the LCD other than power for the LED backlight so smoke is something else going wrong. Without seeing it I can't be sure now.

When you say it did change when flexed, did it just distort what you saw? Or did the areas where it was dead/lines come up normally briefly?

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