2．
No picture, but backlight is normal:
Yes Yes
No
No
Yes TV
有
No
No
Yes
Can control the TV set
by keys on remote
control or the unit?
Do no channel
have picture at
all?
Enter into factory menu to initialize
EEPROM, then cut off main power
and then turn on the TV set again,
check if there is picture?
Replace the main
board
Readjust the
main board.
Press key MENU,
can OSD display
normally?
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