Repair Flow Chart - AOC L19W461 Service Manual

19'' LCD TV

5. Repair Flow Chart

1. No Power (No LED indicator)
Check power cord and board interface
OK
Check F901, BD901, C904
OK
Check IC901, Q902
OK
Check T901
OK
Check IC903, IC904
OK
Check ZD902
2. Can not start (LED indicator yellow)
Check key board
OK
Check 12V_SB
OK
Check PWR_ON signal
OK
Check RELAY-SW signal
OK
Check main board power supply part
OK
Check U401, U404
OK
2
Check I C communication
NG
NG
Replace F901 or BD901 or C904
NG
Replace IC901 or Q902
NG
Replace T901
NG
Replace IC903 or IC904
NG
Replace ZD902
NG
Repair the key board
NG
Return to "1"
Check U905, Q906, 0907
NG
2
Check I C communication
NG
Replace Q910, Q912
NG
Replace U401 or U404
Plug in power cord and interface
NG
20
AOC L19W461
Replace U905 or Q906 or Q907