HP LE1851w

18.5" LCD Color Monitor HP LE1851w
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9.2 Trouble Shooting
9.2.1 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
X401 oscillate waveforms are
normal
Measure U104 PIN 2=3.3V
Measure CN101 or U104
Replace U401
Replace X401
OK
OK
OK
NG
NG
NG
NG