LG 24LF454B Service Manual page 12

4. No Video - HDMI
Check input signal format
Is it supported?
Y
Check HDMI Cable for Damage or
Open Connector
Y
Check JK100 for proper
connection or Damage
Y
Check I2C Signal
(JK100)
Y
Replace Main Scaler
(IC300)
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Only for training and service purposes
N
Replace Connector
N
Re Download EDID Data
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LGE Internal Use Only