LG 42PC5R Service Manual page 17

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3. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is green.
(2) Check following
Does
minute discharge
at Module?
Yes
Is the Link cable
normal?
Yes
Is the IC500's
output normal?
4. In case of becomes unusual display from RF mode.
Is video
output of the
Tuner normal? (Check
TU400_Pin13)
Yes
A
Is the LVDS
Cable connected
well?
Yes
Change the IC(IC500)
No
Is the inverter
/VaVs on?
Yes
Check the PDP/LCD Module
No
Reconnect the link cable in
P803(Plasma)/ P804(LCD).
No
Replace the VSC.
Is the
No
input voltage
normal?(Check
Pin3)
No
Check the power.
No
Cable inserts well.
Digitized in Heiloo the Netherlands
Is output the normality
No
Low/High voltage
except Stand-by 5V?
Yes
Is the I2C communication normal?
(Check Pin9, Pin10)
Check the Tuner.
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4/17/2018
Replace the
Power board.
No
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