AOC L19WA91 - Repair Flowchart: Abnormal Display

26
4. Abnormal Display
Check the source
OK
Reset source
NG
Check signal filter circuit
NG
Replace the filter or inductance
OK
NG
TV signal Check TV system setup
OK
Check TU201
Replace TU201
OK
Check U401
NG
Replace U401
OK
Check LVDS cable
NG
Replace LVDS cable
OK
Check panel
NG
Replace panel
Check input signal
A
V, S-video, Com
p
，PC，HDMI si
g
nal
OK
Check U400
NG
Replace U400