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Trouble shooting
Image display abnormal
Check the image as the following steps.
Singal input ; but no
image display
No
VGA input ; but
no image display
No
Video input ; but no
image display
No
HDMI input ; but no
image display
No sound
Follow the steps below for check:
Check whether it has
au- dio signal output
No
Check whether AV
board whether defectie ̀
Yes
Change AV board
Yes
Check signal processing and LCD driver board.
Check the power supply
Check the connection between the main board to LCD driver board
and the power supply of LCD driver board.
Yes
Check whether the power lines between main board to the terminal
connect properly with the FCF lines.
Yes
Check the connection between the terminal and FCF lines.
Check the connection between HDMI Cable and main board Change
Yes
other function well HDMI cable & whether work well with the unit
Yes
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.
No
1. Check the connection FFC wire between Main baord and AV baord
2. Check the ower wire ̀ between Main board and AV board
17
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