Daewoo L520B Service Manual page 28

5. No Video
Has display image
Check the output of scalier
(pin 71, 72, 73, 74, 75)
and soldering of CN5.
No Video
Yes
only white?
Yes
Check if
the CN5 wafer is
well connected at
the LCD panel.
Yes
Is pin 1
of Q5 3.3V?
Yes
No
Next page.
No
Connection trouble.
No
Check Q5, its ambient
circuit and pin 42 of -com.
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