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4. Troubleshooting
■ No Video
•
Symptom
•
Major Checklist
•
Diagnostics
CAUTION
Make sure to disconnect the power before working on the SMPS board.
4-4
Audio is normal but no picture is displayed on the screen.
The output voltage of the Main SMPS.
This may happen when the LVDS cable connecting the Main Board and the Panel is
disconnected.
Che ck the LED ope ra tion of Logic Boa rd
whitch is norma lly ope ra ting?
(Norma l : Blink once a s e cond)
Ye s
Che ck the LVDS conne ctor.
Is it conne cte d corre ctly?
Ye s
Che ck the e a ch output of the S MP S .
Are a ll volta ge ne rma l?
Ye s
Re place the Main Boa rd.
No
Re place the Logic Boa rd.
No
Re place the LVDS Ca ble .
No
Re place the S MP S .
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