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It is the lvds cable on the t-con unplug it, and take the back off. Reseat the lvds cable at the very top of panel at the T-CON . It is a bad connection.

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Q: Insignia LCD TV starts flickering after being on for about an hour. Turing the tv on and off fixes the problem for a short time. Letting the tv cool down reset it so u can use it for another hour.?
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