No Video (Digital) - Samsung 910N Service Manual

5 Troubleshooting

5-2-2 No Video (DIGITAL)

Check signal cable connection and power.
X400 oscillate properly?
1
Yes
Is there R, G, B input at
6
5
4
R110, R112, R114, R111,
R113 and R115?
Yes
Is there waveform
7
at R11, R117?
Yes
Does the output signal appear
at Pin 17~20, 22~27 of CN400?
Yes
There are DC 5V at Pin 1, 2
and 3 of CN400?
Yes
Replace LCD Panel.
MJ15AS*/MJ17AS*/MJ19AS*/
MJ15BS*/MJ17BS*/MJ19BS*
No
Replace or check related circuit.
No
Check input part.
No
Check input part.
No
Check IC400 and related circuit.
No
Check the panel EN signal at R222
and BLEL signal at R603.
5-5