LG 43UR8000PSA Service Manual page 78

Appendix. How to check for OLED TV module defects
1. Disassemble the back cover to disconnect the Main B/D
2. Check if the test pattern is working on the screen
3. If the pattern appears, it means the Main B/D is defective (need to replace it)
4. If the pattern doesn't appear, (keep showing no screen),
it means the Module is defective(need to replace it)
[Models launched before 2025]
R.G.B pattern operation
Power B/D
Parts connecting Cable
T-Con Main B/D
//
JIG
A jig for sending test patterns
※ SVC Part P/No : RAD33749101
Series Size Model Name
48 OLED48A*
55 OLED55A*
A
65 OLED65A*
77 OLED77A*
55 OLED55B*
B 65 OLED65B*
77 OLED77B*
42 OLED42C*
48 OLED48C*
55 OLED55C*
C
65 OLED65C*
77 OLED77C*
83 OLED83C*
55 OLED55E*
E
65 OLED65E*
55 OLED55G*
65 OLED65G*
G 77 OLED77G*
83 OLED83G*
97 OLED97G*
65 OLED65W*
W
77 OLED77W*
[Connecting the power cable, T-Con FFC cable to the Jig]
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Connect the powerboard-mainboard cable with
the powerboard-JIG
Connect the T-Con ~ motherboard
FFC cable to the Jig
Copyright © 2023 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.
OLED TV
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