Repair Flow Chart:Trouble Condition
Green Power LED does not turn on. The TV is dead.
Green Power LED:
Does not turn ON.
The TV is dead.
On analog signal board:
Is the “5VSTB” voltage supplied?
(see TABLE*1.0)
On digital signal board:
Is the “5V_STBY” voltage on
“K5A Pin 3 or Pin 4”?
Analog board is not working.
Replace “analog board”.
Unplug(CN2) connector on
power board. On Power board:
Is the “5VSTB” voltage supplied?
(see TABLE*2.0)
Power board is not working.
Replace “Power board”.
Unplug(K16A) and(K16B) connector
between digital unit and analog unit
Is the “5V_STBY” voltage supplied?
(see TABLE*3.0)
Analog board is not working.
Replace “analog board”.
Replace “digital board”.
While pushing the “power key sw”
is the 2.9V from “key sw2”
supplied to “K16A Pin17”?
Analog board was broken.
Replace “analog board”.
Digital board is not working.
Replace “digital board”.
No:0v
No:0v
Yes:5v
Yes:5v
No:0v
Yes:5v
Yes:5v
No:0v
Yes
No voltage(0v)at K16A Pin17 or 2.9V always present.
(see TABLE*4.0)
(see TABLE*5.0)
Page 1
(TABLE *1.0)Analog board:5VSTB Test Points
39" Models
5VSTB on
Analog board
Confirmation Voltage
P39842-00 Z6SE
P39842-01 Z6SF
Analog
K17 Pin4 or Pin5
5V
(TABLE *2.0) Power board:5VSTB Test Points
39" Models
5VSTB on Power board
Confirmation Voltage
P39842-00 Z6SE
P39842-01 Z6SF
Power CN2 Pin4 or Pin5
5V
(TABLE *3.0)Digital board:5V_STBY Test Points
39" Models
5V_STBY
on
Analog board
Confirmation Voltage
P39842-00 Z6SE
PW39842-01 Z6SF
Analog
K16A Pin3 or Pin4
5V
