4-1-3. No Video (Analog PC signal)
Symptom Audio is normal but no picture is displayed on the screen. -
Major
checkpoints
Check the PC source -
Check the Main Chipset. -
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. -
Diagnostics
Does the signal appear at
TP - PC_R, PC_G, PC_B, PC_HS, PC_VS
(R, G, B, H, V) ?
Does the digital data appear at
TP - O_TXCLK+, O_TXCLK- ?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'
or 'DPMS mode'.
Input the analog PC signal properly.
Please, Contact Tech support.
Check CN901, PC cable.
Change the Main Assy.
Check IC1102 (SX1)
Change the Main Assy.
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the PC source and
check the connection of D-SUB ?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
1
2
Caution Make sure to disconnect the power before working on the IP board.
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