Read LG 37LF66 (CHASSIS:LD75A) Service Manual online
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2) In case of does't display the screen into specific mode
(1) Symptom
- The screen does not become the display from specific input mode
(RF, AV, Component, RGB, DVI).
(2) Check follow
- Check the all input mode should become normality display.
(3) In case of becomes unusual display from RF mode
Is normal the
Tuner?
Is normal the Input voltage, IIC
Communication and CVBS output?
Replace Tuner
Is the Tuner Cable
connected well?
Cable inserts well.
Yes
No
No
No
Yes
Is normal the
CXA2069Q?
Replace IC
Is normal the Input voltage, IIC
Communication and HV sync?
Yes
No
Yes
Replace IC
Yes
Is normal the
FIL8548?
Is normal the Input voltage, IIC
Communication and HV sync?
No
Block A
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