HP LP2475w - Page 39

24" LCD Color Monitor HP LP2475w
39
No picture (DVI / HDMI)
No power
Press power key and look if
the picture is normal
The AC of 100-240 is normal Please
reinsert and make sure
Reinsert or check the
power section
OK
Measure U406 PIN 5/6 = 1.8 V
U407 PIN 2 = 2.5 V
U403 PIN 2 = 3.3 V
NG
NG
OK
Measure CN402 PIN2/3/4 = 5 V
PIN11/12 =12 V
Check power section
NG
OK
Replace U406, Q407, U403
X401 and X101
Oscillate waveforms are normal?
Replace X401,
X101
NG
OK
Replace U104, U401