ViewSonic VP191b-1 Service Manual page 46

6-2-1 Power Circuit Troubleshooting
6-2-2 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
Confidential - Do Not Copy
43
Change
No
LCD Panel
Yes
Change
No
LCD Panel
Yes
VP191b/s