Philips 190V1SB/93 Service Manual page 38

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38 38
Meridian 1
(2). No Picture
No picture
The button is under control
OK
Measure U703 PIN2=3.3V
OK
X401 oscillate waveform is normal
OK
Check HS VS from CN101 is normal
OK
Replace U401
NG
X401 oscillate
waveform is normal
Check reset circuit of
U401 is normal
Replace U401
NG
NG
NG
NG
OK
NG
OK
Check C706, C707 and U703
Replace X401
Check Correspondent
component
Replace X401
Check Correspondent
component