AOC LM927U - Page 35

AOC LM927U
35
White screen
White screen
Measure Q204 base
is high level?
Measure U201 PIN2=2.5V
U202 PIN2=3.3V
X401 oscillate waveform
is normal
Check Q203 is broken or
CN503 solder?
Check
Correspondent
component
Replace PANEL
Check
Correspondent
component
Replace U401
OK
OK
OK
Check
Correspondent
component
OK
NG
NG
NG
NG
http://www.wjel.net