AOC L19W631 - Troubleshooting and Repair; Repair Flowcharts

19’’ LCD TV AOC L19W631
20
5. Repair Flow Chart
1. No Power (No LED indicator)
2. Can not start (LED indicator green)
Check the 12V Supply
OK
Repair the power
NG
OK
Check Q801，Q802，Q803，Q806,Q805
NG
Replace Q801 or Q802 or Q803 or Q806, Q806
OK
OK
Check LVDS cable
NG
Replug or replace the cable
OK
Check PT801,PT802, Q804,Q807
Check Panel
Check IC801
Replace IC801
NG
NG
Replace PT801,PT802,Q804,Q807
NG
Replace panel
Check the source
OK
Reset source
NG
NG
Check
p
ower cord and board interface
Plu
g
in
p
ower cord and interface
OK
Check F901, BD901, C905
NG
Re
p
lace F901 or BD901 or C905
OK
Check the start volta
g
e of IC901
p
in8
Check D902, C906, ZD905
NG
Re
p
lace IC901, R931, R904, R938
OK
Check T901
OK
Re
p
lace T901
Re
p
lace D902 or C906 or ZD905
OK
NG
NG
Check the out
p
ut wave of IC901 PIN5
NG
Re
p
lace D901 or Q903 or ZD904
OK
Check the feedback circuit&
p
rotect circuit