LG 55LH5750-UB - Page 15

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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Check input signal f ormat.
Is it supported?
OK
Check DDC in-start menu
NG
Replace DDC component
HDMI1 : AR3208, AR3207, D3200
HDMI2 : AR3234, AR3231, D3203
OK
NG
Replace Main
Board or HDMI
Jack
HDMI1 : JK3201
HDMI2 : JK3202
Check DDC component
HDMI1 : AR3208, AR3207, D3200
HDMI2 : AR3234, AR3231, D3203
NG
Check HDMI pattern
JK3201,JK2301 ↔ IC101 HDMI
pattern
NG
Replace Main Board
OK
Replace Main IC (IC101)
or Main Board
12. HDMI No sound