23” LCD Color Monitor BenQ G2320HDB
51
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 G2320HDB
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Page 57: ...23 LCD Color Monitor BenQ G2320HDB 57 PCB LAYOUT Main Board...
Page 58: ...23 LCD Color Monitor BenQ G2320HDB 58...
Page 59: ...23 LCD Color Monitor BenQ G2320HDB 59 Power Board...
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