ViewSonic VP171 Service Manual page 31

4-2.1 A. Power Circuit Troubleshooting
4-2.2 B. Performance Troubleshooting
Start
Is screen black ?
No
Is screen white ?
No
Abnormal Color ?
No
1
ViewSonic Corporation
Start
Change
No
Power
Board
Yes
End
Change
Yes
Inverter Board
Yes
Yes
Replug/Change
FPC Cable
Yes
Change
Yes
Main Board
Yes
Change
Main Board
Yes
Change
No
Main Board
Yes
Change
No
Main Board
Yes
Change
No
LCD Panel
Yes
26
Confidential – Do Not Copy
Change
No
LCD Panel
Yes
Change
No
LCD Panel
Yes
VP171/b/s