BenQ M2400HD Service Manual - Page 49
Check Q702, Q703 is broken
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24" LCD Color Monitor (3) White screen White Screen BenQ E2400HD Measure Q703 base NG X401 oscillate is low level? waveform is normal OK Check Q702, Q703 is broken or CN701 solder? Check Correspondent component. NG OK Replace Panel OK NG Check U401 OK NG Check reset circuit of U401 is normal NG Replace X401 Replace U401 Check Correspondent component. 49
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24” LCD Color Monitor
BenQ E2400HD
49
(3) White screen
White Screen
Measure Q703 base
is low level?
X401 oscillate
waveform is normal
Check Correspondent
component.
Replace Panel
Check Correspondent component.
OK
OK
Replace X401
NG
NG
NG
NG
Check reset circuit of
U401 is normal
OK
Check Q702, Q703 is broken
or CN701 solder?
Check U401
OK
Replace U401
NG