Samsung 173P PLUS - No Video (ANALOG)

4 Troubleshooting
4-2
X400 oscillate properly?
4-2 No Video (ANALOG)
1
Replace or check related circuit.
Check signal cable connection and
power.
Yes
No
Is there R, G, B input at
R103, R108 and R113?
Check input part.
Yes
No
Is there Hsync, Vsync waveform
at Pin 37, 38 of IC 400?
Check IC400 and related circuit.
No
Yes
Is there Hsync, Vsync waveform
at Pin 43, 44 of IC 200?
Check IC200 and related circuit.
No
Yes
Does the output signal appear
at Pin 8~13, 15,16,18~23,25~30
of CN400?
Check IC401, IC402 and related
circuit.
No
Yes
There are DC 5V at Pin 1, 2
and 3 of CN400?
Check the panel EN signal at R218
and BL_EL signal at R612.
No
Yes
Replace LCD Panel.
2
2
3
3