LG DVS7905 Service Manual page 16

(8) No 3.3V(TO DVD)
NO 3.3V.
YES
NO
Is Vcc(4V) supplied
to IC152 Pin1?
YES
NO
Is the Q162 Base
"H"?
YES
Check or Replace
IC152, R156, C153.
Check or Replace
the D111.
Check the Power
Control.
3-6