HP L1940T - Adjusting the Tilt; Adjusting the Swivel

19" LCD Color Monitor HP L1940T
19
No picture (LED is orange)
No picture
OK
OK
NG
Y301 oscillate waveforms
are normal
Replace Y301
Check if the sync signal from
computer is output and video cable
is connected normally
Input the sync signal of computer, or
change the cable
Replace U401
NG
OK
Key is under control?