BenQ G920HDA Service Manual page 48

18.5" LCD Color Monitor
(3) White screen
Check Q602, Q601 is broken
or CN601 solder?
Check Correspondent
component.
White Screen
Measure Q601 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.
48
BenQ G920HDA
NG
Replace X401
NG
Replace U401