Conclusion: Exchange the Panel
Source Driver
LCD Panel (Gate Driver is in Panel)
Diagnosis
In this case, vertical half of the screen has trouble.
So, half of the source driver is defective.
So, exchange LCD panel.
Picture Defect (2) (D Series)
Gate
Driver
LVDS DATA
Control DATA
TC board
LVDS DATA
A board
(LVDS= Low Voltage Differential Signaling)
Sample Picture
Abnormal area
Slide # 82