Mainboard Failure Check - Haier LE22S600 Service Manual

9-3. Mainboard Failure Check

No picture but have sound
Check the power output
Yes
Check the J1 CN15 (BLO)
Backlight on/off
Verify if the DC/DC
convertor can output the
right Voltage,
Q8 output 5V
Verify if
U9
output
Yes
Change LVDS wire
38
No
No
Yes
No
Yes
No
Service Manual
Model No.: LE22S600
Change the Power Board
There's something wrong
with FRC
Change the corresponding
DC/DC
Change
the corresponding IC
Still having
problems
Change Panel