Samsung 732NPLUS - No Video (ANALOG)

4 Troubleshooting
4-2
X400 oscillate properly?
4-2 No Video (ANALOG 17", 19")
1
Replace or check related circuit.
Check signal cable connection and
power.
Yes
No
Is there R, G, B input at
R101, R100 and R103?
Check input part.
Yes
No
Is there Hsync, Vsync waveform
at Pin 100, 1 of IC 400?
Check IC400 and related circuit.
No
2
3
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 17~20, 22~27 of CN400?
Check CN400 and related circuit.
No
Yes
There are DC 5V at Pin 1,
2 and 3 of CN400?
Check PANEL_EN SIGNAL at R222
is High(On:High) and BL_EN signal
at R603(ON:Low) is Low
No
Yes
Replace LCD Panel.
2
3
* All locations of this page includes Main PBA.