LG 65SK9000PUA Service Manual page 50

Standard Repair Process Detail Technical Manual
Error symptom
Content
Entry method
1. Press the ADJ button on the remote control for adjustment.
2. Enter into White Balance of item 12.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
error_No
A. Video
Check White Balance value
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
video/Normal audio
A2
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A2