LG LH-CX640 Series Service Manual page 22

3-5
NO
32VA.
Replace
the
F101.
(use
the
same
Fuse)
Is the
F101normal?
Is the
TH101
normal?
Is
the
BD101
normal?
NO
NO
NO
Replace
the
BD101.
Replace
the
TH101.
NO
NO
NO
Is
the
D108
normal?
Checkor
Replace
the
D108.
Replace
the
D122.
Replace
the
IC103.
YES
YES
YES
YES
YES
YES
YES
Is
Vcc(12~23V)
s up-
plied
to
IC101
Pin3?
Is
the
D122
normal?
Is
there
about
2.5V
at
the
IC103?
Check the
Woofer
Main
PCB
Power
supply
Line
short or not?
(5)
No
32VA
YES