43
Return Set
Does Backlight
turn On?
LED Indicator
Function check
Does Picture
appear?
Power On Key
Function check
Reinstall
IR Cable
Check TV Function
Exchange
IR board
Check IR Cable
Connection
Check TV Function
Exchange
Main board
Check TV Function
Finish Repair
Power Cable
connection Check
Exchange
PSU board
Reinstall
Power Cable
Check TV Function
Yes or OK
No or NG
V-Line/H-Line
Abnormal?
Panel Cable(FFC)
Connection Check
Exchange
Main board
Reinstall
Panel Cable
Check TV Function
Finish Repair
Check TV Function
Exchange
Panel
Check TV Function
Finish Repair
Yes
OK
NG
No
Yes
Yes
No
No
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
NG
NG
Exchange
Panel
Check TV Function
OK
NG
APPENDIX-1 Trouble analysis flow
KDL-55W650D UC2/LA1