AOC AOC2241VG

Service Manual AOC2241VG
36
No picture (LED orange)
Whitescreen
Check flow chart
for the no signal
No picture
Check signal wire
Check U701 Vout=3.3V;
U703-out=1.8V,Vlcd=5V
Replace signal wire
check X401 waveform
replaceU703,Q705,Q706,
&around device
replace X401
Check CN101-RGB/HS/VS
Check U402/U403 out
Check Correspondent
component
OK
NG
NG
NG
NG
OK
OK
OK
Replace U401
Updata soft data
OK
NG
Check connector
Replace Panel
White screen
Measure Q706-base
is low level?
Check Q705=5V
Or CN408 solder?
Check around
device
Check X401 waveform
Check U403/U402
Check flow chart
For the white screen
Replace X401
Check around
device
Updata soft
Replace U402/U403/U401
NG
NG
NG
NG
OK
OK
OK
OK