Repair Flow Chart - AOC ENVISION L26W661 Service Manual

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26" LCD TV

5. Repair Flow Chart

1. No Power (No LED indicator)
Check power cord and board interface
OK
Check F901, BD901, C907 NR901
OK
Check, Q904 IC904
OK
Check D903, D917, IC902, Q902 ZD902
OK
Check Q901 IC901 D919 D901 D902
L906 R921
OK
Check IC903，Q903
OK
Check D916， D913， D915， IC907
2. Can not start (LED indicator yellow)
Check key board
OK
Check 5V 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
NG
Replace Q904 IC904
NG
NG
NG
Replace IC902，Q902
NG
Replace D916， D913， D915， IC907
NG
Repair the key board
NG
Return to "1"
Check U916,
NG
2
Check I C communication
NG
Replace Q913, Q914
NG
Replace U401 or U404
QQ:505966338
Plug in power cord and interface
Replace F901 BD901 C907 NR901
Replace D903, D917, IC902, Q902 ZD902
Replace Q901 IC901 D919 D901 D902
L906 R921
NG
Q906, Q907
21
ENVISION L26W661
Replace U905 or Q906 or Q907