good morning colleagues in the forum. I get this TV where when I turn on LG logo appears but the image jumps from top to bottom and the same thing happens when entering the menu and also looks, horizontal lines both at the top of the screen and below and at times a few lines in the middle of the screen but horizontally. When trying to place an image, the answer is the same, that is, it affects any video source that is placed on it. When uncovering this TV, I realize as a first step that it does not have a separate T-COM card, since this is integrated directly to the main board, so it would not be worth removing the one of the 2 flex tapes to verify if the panel have problems or not or maybe you are wrong. As I do not have the service manual to know the different voltages that polarize said panel, the only thing I did was look with the black tip of the grounded volt / chassis and the red tip in the different components that are located around an integrated reference TPS65178 who is responsible for delivering different voltages such as VGH, VGL, VDA, VDD among others but that when being measured and targeted I do not know if they are at the correct level or else that may fail. The voltage data found are as follows: 27.7 volts found in the K7 diode D7704 near the ic 7700 that I consider would be VGH. -4.9 volts found in the anode of diode D7705 near ic 7700 which I consider would be VGL. Well, they don't say any on the plate. 3.29 volts in diode D7700 and ends of L7702 that I consider would be the VDD. 15.25 volts in C7800 capacitor and 15.22 volts in C7801 capacitor near the IC7700 that I believe is the VDA. These data are the most important for the polarization of the drivers for the panel. If any colleague has the service manual and wants to help me address this fault, I would be very grateful for the support.

friend send a picture