Read LG 26LC7D (CHASSIS:LB73A) Service Manual online
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(5) When Component or RGB-DTV/ PC mode is abnormal
(6) When HDMI/DVI mode is abnormal
(7) When DVI-PC mode is abnormal
(8) When Digital TV mode is abnormal
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Is the CXA2151Q(IC500)
normal?
Yes
Is the MST3362(IC604)
normal?
Is the MST3362(IC604)
normal?
No
Replace the IC.
No
No
Replace the IC.
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Yes
Is the Scaler normal?
No
Replace the IC.
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Is the EDID correct?
Yes
Is the latest version the Graphic card
driver of the PC?
Update the Graphic card driver
with the latest version.
with the latest version.
No
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Yes
Is the Scaler normal?
No
Replace the IC.
Cable connected well.
No
Is the Tuner Cable connected
well?
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Is the Splitter normal?
Yes
Replace the Tuner.
Is the Flat Cables
normal?
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Replace the IC.
No
Is the Input voltage, IIC Communication
and HV sync normal?
and HV sync normal?
Yes
Is the Scaler normal?
No
Replace the IC.
No
No
Replace the Tuner.
No
Yes
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