No Power (Not Turn On) - LG 50PK760N-ZC Service Manual

Repair Process
PDP TV
Symptom
Check
Power LED
Power LED
ON?
. Stand-By: Red
N
. Operating: Green
Check Power cord
was inserted properly
Check & Repair
Mechanical Power switch
on Local control of TV
Normal
?
N
Check ST-BY 5V
on Power Board
Y
Normal
Voltage?
N
B. Power Problem

No Power (Not turn on)

DC Power on
Y
by pressing Power Key
On Remote control
Y
Close
Check
Normal
AC DET Signal
Signal?
on Power B/D
N
Check Power B/D
Replace Power B/D
N
Check
Normal
R/C IR Operation
Y
Close
Check
Y
Normal
RL_ON Signal
Signal?
on Power B/D
N
Check Main B/D
Replace Main B/D
6
Making 2010. 2 . 22
Revision
N
Repair/Replace
Normal
IR B/D
Y
Check
Y
the other pin's
Normal
Output voltage
on Power B/D
Close
ⓒ LG Electronics. Inc.2009
전자 - 6-2
6/9
N
Replace
Power B/D
Y