LG 42PX3RVA Service Manual page 18

2. No Power
(1) Symptom
Does't minute discharge at module.
Ø
Non does not come in into the front LED.
Ø
(2) Check follow
Is plug in power cord?
Is connect the Line Filter and Power
Board Cable?
Is normal the Fuse(F101) on Power
Board?
Is connect the Power Board and 7P
of VSC Board Cable?
After remove the cable connect to
Power Board(except the CN101
connection cable), authorizes the
AC voltage marking on manual.
When ST-BY 5V does not operate,
replace Power Board.
Yes
Yes
Yes
Yes
No
Plug in power cord.
No
Connect Cable.
No
Replace Fuse.
No
Connect Cable.