Insignia 9246MF7010 Manual Del Usuario página 17

2. No picture.
N
Replace
main board.
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Troubleshooting Guides
No picture.
Check if pressing keys on
remote control or key board
can operate the TV set?
Check if there is backlight?
N
Replace Press key MENU to check if
OSD menu displays normally?
main board.
Enter into factory menu
Y
Do all channels have
to initialize EEPROM,
no picture?
turn off the TV set,
then turn it on again,
check if there is picture?
Y
Which channel has
no picture?
Readjust main board.
Check DIF output
from TUNER0-
PIN13 &14.
Check TUNER0
and its peripheral
circuits.
Y
N
Replace main
board.
Y
N
Check if there is 24V
on power board.?
Y
Y
Check if the voltage of
X604-PIN10 on main
board is high level?
Y Y
Check backlight of
display panel.
N
OTHER
Replace main
board.
TV
Y
Replace main
board.
N
N
Check power board.
N
Replace main board.