4. Troubleshooting
4-1-3. No Video (Analog PC signal)
Symptom
Audio is normal but no picture is displayed on the screen.
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Check the PC source
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Major
Check the Arsenal, Check the Chelsea.
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checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Diagnostics
1
2
Caution
Make sure to disconnect the power before working on the IP board.
4-4
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the PC source and
check the connection of D-SUB ?
Yes
Does the signal appear at
TP - PC_R, PC_G, PC_B, PC_HS, PC_VS
(R, G, B, H, V) ?
Yes
Does the digital data appear at
TP-E_TXCLK+, E_TXCLK-,
O_TXCLK+, O_TXCLK-?
Yes
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Check a set in the 'Stand-by mode'
No
or 'DPMS mode'.
No
Input the analog PC signal properly.
Check CN902, PC cable.
No
Change the Main Assy.
Check IC1102 (SX1).
No
Change the Main Assy.
Please, Contact Tech support.