Read LG 55SL8500-ZA (CHASSIS:LD91K) Service Manual online
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5. AV1(SCART CVBS) No Video Problem
Check Signal format
Is it supported?
Check the SCART Cable
YES
MAIN B’D JK1100 Check
Replace MAIN B’ D JK1100
YES
NO
Check MAIN B’D R1117
Video Signal ?
NO
YES
Check MAIN B’D C210
Video Signal ?
Replace
MAIN B’D C210
NO
Replace MAIN B’D IC 100
YES
6. AV1(SCART RGB) No Video Problem
Check Signal format
Is it supported?
Check the SCART Cable
YES
Check MAIN B’D JK1101
Replace MAIN B’D JK1101
YES
NO
YES
Check MAIN B’D C200 (RED)
C201 (GREEN)
C202 (BLUE)
Video Signal ?
Replace
MAIN B’ D C200, C201, C202
NO
YES
Check MAIN B’ D R211 (RED)
R212 (GREEN)
R213 (BLUE)
Video Signal ?
Replace
MAIN B’D R211, R212, R213
YES
Replace MAIN B’D IC 100
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