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