Bush A626N Service Manual page 27

No Display (LED Indicator Green)
Key Board
Is Key Board connecting normally?
Check the source
OK
Check LVDS cable
OK
Check IC901, IC902
OK
Check IC950, IC951
OK
Check T801
OK
Check U400
OK
Check panel
OSD is unstable or not working
Y
Is Button Switch normally?
Y
Is Key Board Normally?
Y
Check Main Board
NG
Reset source
NG
Reset LVDS cable
NG
Replace IC901 or IC902
NG
Replace IC950 or IC951
NG
Replace T801
NG
Replace main board
NG
Replace panel
N
N
N
27
Connect Key Board
Replace Button Switch
Replace Key Board