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24" LCD Color Monitor
(3) White screen
Check Q702, Q703 is broken
or CN701 solder?
Check Correspondent
component.
White Screen
Measure Q703 base
is low level?
OK
NG
OK
Replace Panel
NG
X401 oscillate
waveform is normal
OK
Check U401
OK
Check reset circuit of
U401 is normal
NG
Check Correspondent component.
51
BenQ M2400HD
NG
Replace X401
NG
Replace U401
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