LG LMV1683ST Service Manual page 15

Does the display operate?
No
1
When you push the any Key,
is there any beep sound?
Yes
Power Off
2 Is the connector connected
to PCB?
No
3
Is there any beep sound in
continuity test between the
power code and 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
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
No
this flow chart.
Reconnect or
Yes
repair the
connector.
Check PCB
Yes
Go to No. 6 of
This flow chart.
-15-
4
Is there any beep sound in
continuity test between the
ends of fuse?
Yes
5 Is there any beep sound in
continuity test between the
ends of the noise filter?
Yes
6
Replace the PCB.
(EBR67471707)
Replace the
No
Fuse.
Replace the
No
Noise filter.