LG DR165 Service Manual page 18

No 12V
Is the Vcc(14.0V) supplied to IC131 pin 1?
Is the IC131 pin4 'H'?
Check or Replace the IC131
No 5V
Is the Vcc(5.5V) supplied to IC132 pin 1?
Is the IC132 pin4 'H'?
Check or Replace the IC132
YES
YES
YES
YES
YES
YES
NO
Check or Replace the D127
NO
Check the PWR CTL "H" signal
from µ-com
NO
Check or Replace the D125
NO
Check the PWR CTL "H" signal
from µ-com
3-3