Acer X233H

32
3. Panel Power Circuit
White screen
Measure Q302 base
is low level?
X401 oscillate
waveform is normal
Check CN301is solder
and Q302,Q301 is OK?
Check Correspondent
component.
Replace PANEL
Check Correspondent
component.
Replace U401
OK
OK
OK
Replace X401
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal