LG LMV1762SB Service Manual page 15

Does the display operate?
No
1 When you push any Key, is
there any beeping sound?
No
Power Off
2 Is the connector connected
to the PCB?
Yes
3
Is there any beeping sound
in the continuity test between
the power cord and the
connector ?
- Code "L" to Pin1
- Code "N" to Pin3
L L L L L L L L L L L L L L L L L L L L L
L L L L L L L L L L L L L L L L L L L L L L
L L L L L L L L L L L L L L L L L L L L L
L
L
L L L L L L L L L L L L L L L L L L L L L
N N N N N N N N N N N N N N N N N N N N N L
N N N N N N N N N N N N N N N N N N N N N
N
N N N N N N N N N N N N N N N N N N N N N
N
N
N N N N N N N N N N N N N N N N N N N N N
N
No
Go to No. 6 of
Yes
this flow chart.
Reconnect or
No
repair the
connector.
Check PCB
Yes
Go to No. 6 of
this flow chart.
-15-
4
Is there any beeping sound
in the continuity test between
the ends of the fuse?
Yes
5 Is there any beeping sound
in the continuity test between
the ends of the noise filter?
Yes
6
Replace the PCB.
(EBR75341201)
Replace the
No
Fuse.
Replace the
No
noise filter.