LG 32PC50 Service Manual page 15

3. No Raster
(1) Symptom
1) No OSD or image are displayed on the screen.
2) The front LED remains green.
(2) Follow check
Start Check
Does
minute discharge
at Module?
Yes
Is the output for the
IC500 normal?
4. In the case an unusual display in RF mode.
Is the
video output of the
Tuner normal? (Check
TU400_Pin13)
Yes
A
Is the LVDS
Pattern connected?
Yes
Change the IC(IC500)
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No
Is the inverter
/VaVs on?
Yes
Check the PDP Module
No
Replace the VSC.
Is the
No
input voltage
normal?(Check
Pin3)
Check the power.(L1103)
No
Connect again
the Pattern.
Is output the normal
No
Low/High voltage except
for the Stand-by 5V?
Yes
Is the I2C communication normal?
(Check Pin9, Pin10)
No
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No
Check the Tuner.
LGE Internal Use Only
Replace the
Power board.