Customer does not believe that the set was knocked or hit, yet this problem has surfaced. Anywhere between four and eight vertical lines are on the screen.It looks like a video sync problem. Advice.
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What causes vertical colored lines on a TV screen? When a TV is showing vertical colored lines, a loose wire cable in the TV might be the cause. If you knock on the back of the TV, the vertical colored lines MAY disappear temporarily. This is a sign that a cable is loose or the T-Con board is faulty.
Sound like cold solder joints on the vertical output ic. The vertical output ic is usually a inline 7-9 pin chip that begins with la prefix. Not hard to repair at all just be careful not to touch anywhere near the anode leads to the picture! Basically it will knock the **** out of you. lol..
This television, appears to have had a failure in the mainboard. This
is the board that controls the video functions and sound functions. The
unit should be taken or sent in to a service center for testing and
servicing. The service center will have all the correct service
information to determine the problem for you. You can call Insignia
customer support at this telephone number 1-877-467-4289. You can also
got to the customer support website at www.insignia-products.com. Go to
the support section and ask them for help on how to get service for
your television. I hope this information helps you with your problem.