Repair Flow Chart: Trouble Condition
page 1
Green Power LED does NOT turn on.
The TV is Dead.
(TABLE *1) Main Bd.: 5V_STBY Test Points
or
or
(TABLE *2) Power Bd.: 5V_STBY Test Points
Main L1602
5V_STBY on Main Bd.
US1J 26", 32"
US1K 42", 46"
5 V
US1J 26", 32"
Power CN2 "4pin"
US1K 42", 46"
Power CN2 "3pin"
5 V
Model
5 V
Confirmation Voltage
5V_STBY on Power Bd.
Confirmation Voltage
5 V
Model
Main K8B "4pin"
Main K8B "3pin"
Main L1705
On Main Signal Bd.:
Is the "5V_STBY" voltage
supplied?
(see TABLE *1)
no: 0V
Power Bd. is not working.
Replace "
Power Bd.
"
Unplug (K8B) connector on Main Bd.
On Power Bd.:
Is the "5V_STBY"voltage supplied?
(see TABLE *2)
no: 0V
yes: 5V
Replace "
Main Bd."
and "Wiring Harness"
yes: 5V
Green Power LED:
Does not turn on.
The TV is dead.
Confirm wire harness connections.
And confirm LED again.
On Main Signal Bd.
Is the "5V_STBY" voltage
on "K8CTR 1Pin" ?
no: 0V
yes: 5V
While pushing the
"Power Key SW": is the 5V from
"KEY SW" supplied to "K8CTR
3pin"?
yes
Main Bd. is not working.
Replace "
Main Bd
".
No voltage (0V) at K8CTR pin 3, or 5V always present.
Key Switch Assy. unit will be broken.
Replace "
Key Switch Assy.
"
Main Bd. is not working.
Replace "
Main
Bd
"
Содержание DP26649 - 26" LCD TV
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