LG KE820 Service Manual page 78

START
Connect power
supply to the
DUT
Yes
"PWRON"
signal
Yes
"_RESET"
signal
Yes
Check the all
LDO's output
Yes
Is the 26MHz
clock From
Yes
Replace main PCB
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5. Trouble shooting
Check the
No
RPWRON,
replace U204
No
Check solder
U206 or replace it
No
Check solder
U203 or replace it
Check solder
No
X401, U402
or replace it