18.5” LCD Color Monitor BenQ G920HDA
46
Main Board
(1) No Power
No power
Press power key and look if the
picture is normal
Please reinsert and make sure the
AC of 100-240 is normal
Reinsert or check the
power section
Check if X401 oscillate waveforms are normal
Measure U201 Pin2=3.3V
OK
OK
NG
NG
NG
Replace U201
Check U401
Replace X401
OK
NG
Check if the Pin 3, 4 of CN201 is 5V input
Check power board
NG
OK
Summary of Contents for G920HDA
Page 27: ...18 5 LCD Color Monitor BenQ G920HDA 27...
Page 32: ...18 5 LCD Color Monitor BenQ G920HDA 32 3 Remove the Bezel Remove the bezel as follow Fig 3...
Page 52: ...18 5 LCD Color Monitor BenQ G920HDA 52 PCB LAYOUT Main Board...
Page 53: ...18 5 LCD Color Monitor BenQ G920HDA 53 Power Board...
