Sanyo LCD-22XR9DA - EPG Operation; Electronic Program Guide Usage

2.2. Backlight, but no picture
Check if the unit button
and remote control
operation?
Check if all channels
have no signal?
Replace
main board
Enter factory-menu,
initialization EEPROM,
then turn off the TV,
turn on again, display
picture?
Replace main
board
yes
no
yes
Does display OSD
menu on screen when
press menu button?
Adjust main board
again
yes
no
no
no
yes
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