not seeing a video,,,i did clean both long and short cables,,

cleaning the pins didnt work problem is still the same,,think issue could be main board? tv works fine for about an hr before little lines start at the bottom then after a while flashing vertical line like in the video then black screen

will try tht ,, but there are 2 short ribbons tht connect from the tcon to the lcd screen ..are those or its the long one that connect from the main board to the tcon.. or should i try changing all those cables ,,

Insignia PLTVJY301XXGF PLTVJY301XXGFCU Power Supply Board