Haier LE40K6000SF, Service Manual, Page: 35 / 48

Change Panel
Still having
problems
No picture but have
sound
Check if there is +12V at
Pin30 in J1
No
Replace the QD6
Yes
Check if there is +43V at
PEC9
Yes
No
test if PU5 Pin5
（
0.2V
）、
Pin1
normally
Change LVDS wire
No
Replace PU5
Check if PQ6
、
PQ7
、
PR46
works normally
Yes
Replace PQ6
、
PD14
No
S ervice M a nu a l
Model No.:
9-2. M
a
in bo
a
rd f
a
ilure
c
he
c
k
- 52 -
（
12V
）