Samsung LS15HAA - No Video (ANALOG)

4 Troubleshooting
4-3
X400 oscillate properly?
4-3 No Video (ANALOG)
1
Replace or check related circuit.
Check signal cable connection and
power.
Yes
No
Is there R, G, B input at
R101, R103 and R105?
Check input part.
Yes
No
Is there Hsync, Vsync waveform
at Pin 100, 1 of IC 400?
Check IC400 and related circuit.
No
Yes
Is there Hsync, Vsync waveform
at Pin 41, 42 of IC 200?
Check IC200 and related circuit.
No
Yes
Does the output signal appear
at Pin 17~20, 22~27 of CN400?
Check IC400 and related circuit.
No
Yes
There are DC 5V at Pin 1, 2
and 3 of CN400?
Check PANEL_EN SIGNAL at R236
is High(On:High) and BL_EN signal
at R605(ON:Low) is Low
No
Yes
Replace LCD Panel.
2
2
3
3