LG KE820 Service Manual page 86

START
Check Speaker tension and
Contacts are clear.
R300,R301
have low
resistance?
Yes
Between R300,
R301
resistance OK?
Yes
U208 is working
properly?
Yes
Replace Main PCB
Assemble
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5. Trouble shooting
No
Resolder or
Replace LCD
module
Replace FPCB
No
then retest
No
Resolder or
Replace it