Samsung 173P PLUS - No Video (DIGITAL)

4 Troubleshooting
4-4
X400 oscillate properly?
4-3 No Video (DIGITAL)
1
Replace or check related circuit.
Check signal cable connection and
power.
Yes
No
Is there input data at
R122, R124, R127, R128,
R129 and R130?
Check input part.
Yes
No
Is there waveform
at R131, R132?
Check input part.
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.
7
6
5
4