LG GD310 Service Manual page 73

5. TROUBLE SHOOTING
LGE Internal Use Only
START
Check LCD connector
combination then LCD test
with New LCD
Is LCD FPCB
normal?
Yes
Signal is normal on
DIF Signal
FL300, FL302, FL306
Yes
Assemble
FL300, FL302, FL306
No
Replace LCD FPCB
No
Check solder and
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repair
Damaged filter
Only for training and service purposes