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32LH5700 - LG TV Service Manual (repair manual). Page 26

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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 blue
 
 
(2) 
Check follow
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Does minute discharge 
At Module? 
Is the LVDS 
cable normal? 
Is the U102(FLI10620H) 
Output normal? 
Yes 
Yes 
No 
No 
No 
Is output the normality 
Low/High voltage except 
stand-by 5V? 
Reconnect the LVDS 
cable. 
No 
Yes 
Yes 
Is the inverter on?
Replace Main Board.
Replace Main Board.
Check the LCD 
Module
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