Off When On, Off While Viewing, Power Auto On/Off - LG 42LB65 Series Service Manual

Standard Repair Process
Error
LCD TV
symptom
Check A/C cord
* Please refer to the all cases which
can be displayed on power off mode.
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Only for training and service purposes
B. Power error

Off when on, off while viewing, power auto on/off

N
Error?
Y
Fix A/C cord
☞A22
Check Power Off
Mode
Abnormal
Abnormal
☞A19
(If Power Off mode is
not displayed)
Check Power B/D
voltage
※ Caution
Check and fix exterior
Replace Power B/D
of Power B/D Part
Status Power off List
"POWEROFF_REMOTEKEY"
"POWEROFF_OFFTIMER"
"POWEROFF_SLEEPTIMER"
"POWEROFF_INSTOP"
"POWEROFF_AUTOOFF"
Normal "POWEROFF_ONTIMER"
"POWEROFF_RS232C"
"POWEROFF_RESREC"
"POWEROFF_RECEND"
"POWEROFF_SWDOWN"
"POWEROFF_UNKNOWN"
"POWEROFF_ABNORMAL1"
Abnormal
"POWEROFF_CPUABNORMAL"
8
Established
2014.01.20
date
Revised date
CPU
Replace Main B/D
1
Y
Normal
Replace Main B/D
voltage?
N
Explanation
Power off by REMOTE CONTROL
Power off by OFF TIMER
Power off by SLEEP TIMER
Power off by INSTOP KEY
Power off by AUTO OFF
Power off by ON TIMER
Power off by RS232C
Power off by Reservated Record
Power off by End of Recording
Power off by S/W Download
Power off by unknown status except listed case
Power off by abnormal status except CPU trouble
Power off by CPU Abnormal
7/13
Y
Normal? End
N
Replace Power B/D
LGE Internal Use Only