LG 75SM9400PTA Service Manual page 55

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