4-13
4. Troubleshooting
4-1-7. No Video (Component 1, 2)
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the Component source
Check the MT8226
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Check JA3013_NT, JA3016_NT
Change the main PCB ass’y
Power Indicator is off.
Lamp(Backlight) Off, no video
No
Check component source and
check the connection of
component cable ?
Check IC5004
Change the main PCB assembly
Does the signal appear at C3028,
C3030, C3027, C3064_NT, C3066_NT,
C3063_NT?
No
Check IC6001_FBE
Change the main PCB assembly
No
Does the digital data appear at output
of RA6074~RA6076, RA6078~RA6080,
R6082_P, R6083_P, R6086_P,
R6087_P?
Does the digital data appear at
output of RA5070~RA5075?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Yes
Input a component signal.
Check the connected cable.
Yes
6
Yes
7
Yes
0
Caution Make sure to disconnect the power before working on the SMPS / IP Board.
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