Trouble shooting
Image display abnormal
Check the image as the following steps.
Singal input ; but no
image display
Check signal processing and LCD drive
r board
.
Check the power supply
Check the connection between the main board to
LCD driver
board
and the power supply of
LCD driver
board.
Video input ; but no
image display
Check the connection between the terminal and FCF lines.
No
No
No
Check the
connection between HDMI Cable and
main board
Change
other function well HDMI cable & whether work well with the unit
HDMI input ; but no
image display
Check whether the power lines between main board to the terminal
connect properly with the FCF lines.
VGA input ; but no
image display
Yes
Yes
Yes
Yes
1
7
No sound
Follow the steps below for check:
1. Check the c
onnection FFC wire between Main baord and AV baord
2. Check the ower wire ̀ between Main
board and AV board
Check whether
AV
board
whether defectie ̀
Yes
No
Change
AV
board
1. Check whether the speaker cable is plugged in or broken.
2. Ckeck whether the speaker is damaged or not.
If speaker defective,
then change
speaker.
Check whether it has au-
dio signal output
No
Yes
