LG LFXS28566S Service Manual page 68

Wi-Fi modem doesn't work
1
Choose the connectors in the
display and lead wire. Is it loose ?
No
2 Check the Wi-Fi PCB output?
( While Wi-Fi function is on )
Voltage
Wi-Fi modem
[V]
Not
th th
5 pin ~ 6 pin
0V, 5V
Yes
Connect the
Yes
housing
Change
No
Wi-Fi
modem
3
Check the Display PCB output?
( While Wi-Fi function is on )
Display Voltage
CON802 [V]
st th
1 pin ~ 4 pin 5V
Not
nd th
2 pin ~ 4 pin
0V, 5V
Yes
4
Explain to customer
Change the
No
display
CON802