lights on ctrl board, do i need a new board?

[adm1988]

hi,
i have the Lg rz-42px11 which has 6 black two inch vertical lines up the middle of the screen, ive taken the back panel off and can see that the board in the middle (underneath the scart connector boards) which i assume to be the control board has 3 green illuminated lights on it, can anyone tell me what they mean and whether this means the board is faulty? the codes by the illuminated lights read D13, D17 and D816