Intermittent horizontal lines on Philips 55PUS6262/05

Hi all, I’m new here so please be gentle ?

I’ve recently purchased a second hand tv with a fault. As mentioned in the title it displays an intermittent fault where the screen will show horizontal lines for two seconds and then back to normal for two seconds (photos attached hopefully). I have already taken the cover off and cleaned all ribbons connected to the main board and the t-con board but the same fault is still there. Is this likely to be a faulty t-con board or is there something more sinister at play?

Any help is greatly appreciated!

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That it's intermittent almost always is a connector (which you cleaned) or a solder joint (typically on a large multipin IC). If you have access to the board with wide ribbons to the display, try lightly pushing down on any / all large ICs and see if any affect. That you find one, get out a BIG magnifying glass and look around the solder pads / IC pins. You can try pushing on each IC side to help find the bad pin. That you find one, get someone who knows how to solder that kind of small circuitry.

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Thank you Kevin for your response. To clarify, are we talking about ic’s on the t-con or the main bird too?

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Whichever feeds the big ribbons to the display is controlling the rows & columns.

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Thank you! Will update with progress ?

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