BenQ GW2470H - No Video Troubleshooting

77
No Video (Power LED YELLOW)
No Video (Power LED YELLOW)
Press the power
button is OK?
Check the LVDS/FFC
cable or panel
The end
NG
OK
OK
NG
Replace the main board
Replace the power
board
Replace the LVDS/FFC
cable or panel
The end
Replace the key board
OK
Replace the main
board and connection
OK
NG
NG