bravia KDL-46HX920 double image and image flicker

[ademim]

hi how is everyone ?well i have a sony bravia KDL-46HX920 and the set has a defect which is the image show in double and after a while it
starts to clicker. a video of the tv problem here: https://youtu.be/m7abtbP7RD8

please leave your feedback so i can fix this ,some say to cut some traces on the flex cable pcb on the lcd (buffers), some say remove defective cof of the lcd (gate drivers), some say read voltages where i get a negative voltage to run a jump wire .

they all seem good but i dont want to damage anything by doing the wrong method so please help.