Mainboard Failure Check - Haier LE48M7000A Service Manual

9-3. Mainboard Failure Check

No picture but have sound
Check the power output
Yes
Check the CN2 (BLO)
Backlight on/off
Verify if the DC/DC
convertor can output the
right Voltage,
Q45output 5V
Verify if
Q46
output
Yes
Change LVDS wire
39
No
No
Yes
No
Yes
No
Service Manual
Model No.: LE48M7000A
Change the Power Board
There's something wrong
with FRC
Change the corresponding
DC/DC
Change
the Q46
Still having
problems
Change Panel