PROBLEM ------> There are horizontal lines at the top of the screen:
The cause of the problem is the distortion of transmission lines at the left or right corners of the screen due to heating.
In order to determine which side of the panel the problem originates from, first remove the left film that connects the t-con card to the panel from both the t-con and the panel and run the TV. If the image displayed on the screen is correct, the right side of the panel is defective. If the image is the same, put the left film back on both the t-con card and the panel, and this time remove the right film. If the image improves, the problem is with the left side of the panel.
Remove the RM2 and RM5 resistors on the panel board to fix the problem on the right. If the image is not corrected, remove the RM3 and RM6 resistors. If the image is not clear, remove the RM4 and RM7 resistors. If the problem still persists, remove the RM1 resistor as well. When these resistors are removed, the image needs to be improved, but there may be problems other than the main fault in the image. To fix these problems, replace the resistors you removed in order and check the image again each time. If a problem occurs when you wire a series of resistors, leave that series idle. Remember to replace all resistors except the series causing the problem.
You need to use the same method to fix the problem on the left. By looking at which signals the resistors on the right side belong to, you can find out which resistors belong to which signal according to the signal names printed on the card on the left.
STVP : RM1
CKV1 : RM2
CKVB1 : RM5
CKV2 : RM3
CKVB2 : RM6
CKV3 : RM4
CKVB3 : RM7