42" LCD TV
2. Can not start (LED indicator yellow)
Check key board
OK
Check the standby voltage of main board
OK
Check U401
OK
Check U404
OK
2
Check I
C communication
OK
Check the POWER_ON SIGNAL
NG
Repair the key board
NG
Replace U401
NG
Replace U404
NG
Check the components of I
NG
Replace Q906,Q907,Q913
NG
Replace U903,U906,U907,U908,U909,U911
2
C communication
24
AOC L42W665