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
Summary of Contents for LP2475w - 24" LCD Monitor
Page 3: ...24 LCD Color Monitor HP LP2475w 3 1 Monitor Specification ...
Page 7: ...24 LCD Color Monitor HP LP2475w 7 ...
Page 8: ...24 LCD Color Monitor HP LP2475w 8 ...
Page 9: ...24 LCD Color Monitor HP LP2475w 9 ...
Page 10: ...24 LCD Color Monitor HP LP2475w 10 ...
Page 14: ...24 LCD Color Monitor HP LP2475w 14 4 2 Factory Preset Display Modes ...
Page 34: ...24 LCD Color Monitor HP LP2475w 34 8 PCB Layout 8 1 Main Board ...
Page 35: ...24 LCD Color Monitor HP LP2475w 35 8 2 Power Board 8 3Key Board ...
Page 36: ...24 LCD Color Monitor HP LP2475w 36 8 4 USB Board ...
Page 50: ...24 LCD Color Monitor HP LP2475w 50 The panel The end ...