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42LG50FD (CHASSIS:LE81D) - LG TV Service Manual (repair manual). Page 17

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C
2008
- 17 -
2. No Raster 
(1) Symptom 
1) No OSD and image occur at screen. 
2) It maintains the condition where the front LED is blue.
 
(2) Procedure Check 
Is the Inverter on?
 
Is the all of the output 
voltage normal except 
for stand-by 5V?
Replace the Power 
board.
 
Is the LVDS Cable 
normal?
 
Reconnect the LVDS 
Cable in P400.
Is the IC1200(Torino) 
Output normal?
 
Replace the Main B/D.
YES 
NO 
NO 
YES 
NO 
NO 
Replace the Module.
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