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.
For analog signal board:
Is the “5VSTB” working normally?
(see TABLE*1.0)
For digital signal board:
Is the “5V_STBY” voltage on
“K5A Pin8”?
Analog board can not work.
Replace “analog board”.
Unplug(CN2) connector on
Power board. On Power board:
Is the “5VSTB” working normally?
(see TABLE*2.0)
Power board can not work.
Replace “Power board”.
Unplug(K1005) and(K5A) connector
between digital unit and analog unit
Is the “5V_STBY” working normally?
(see TABLE*3.0)
Analog board can not work.
Replace “analog board”.
Replace “digital board”.
While pushing the “power”key
is the 2.9V from “key circuit”
supplied to “K5A Pin18”?
Analog board was broken.
Replace “analog board”.
Digital board can not work.
Replace “digital board”.
No:0v
No:0v
Yes:5v
Yes:5v
No:0v
Yes:5v
Yes:5v
No:0v
Yes
No voltage(0v)at K5A Pin18 or 2.9v always present.
Page 1
(TABLE *1.0)Analog board:5VSTB Test Points
50" Models
5VSTB on analog board
Confirmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Analog K8B Pin3
5V
(TABLE *2.0) Power board:5VSTB Test Points
50" Models
5VSTB on power board
Confirmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Power CN2 Pin3
5V
(TABLE *3.0)Digital board:5V_STBY
50" Models
5V_STBY on analog board
Confirmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Analog board K1005 Pin8
5V
