BenQ G920HDA Service Manual page 46

18.5" LCD Color Monitor
Main Board
(1) No Power
Check if the Pin 3, 4 of CN201 is 5V input
Check if X401 oscillate waveforms are normal
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
OK
OK
Measure U201 Pin2=3.3V
NG
OK
NG
OK
Check U401
NG
Reinsert or check the
power section
NG
Check power board
Replace U201
Replace X401
46
BenQ G920HDA