ViewSonic VA1912W Service Manual - Page 42

Failure Analysis, Repair, Testing - dvi

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Failure Analysis Repair Testing ※ " Panel Change" Should be Performed to Level 3 Repair B Display White Out Check PCBA Booting Delay Brightness Even Abnormal Beat Display No Backlight No signal Check PCBA Check PCBA Check Panel Check Adapter R.G.B Display Abnormal Gray Scale Display Abnormal Check PCBA Check Wire Check Panel AD/B Change Power/B Change Inverter/B Change OSD/B Change Power/B Change Inverter/B Change Panel Change Adapter Change AD/B Change CNT/B Change VGA cable DVI cable Panel Change Next Step NG TEST C Completed ViewSonic Corporation 39 Confidential - Do Not Copy VA1912w-2_VA1912wb-2

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Failure Analysis
Repair
Testing
Gray Scale
Display
Abnormal
R.G.B
Display
Abnormal
No signal
Display White
Out
Brightness
Even
Abnormal
Next Step
TEST
NG
Completed
B
Booting Delay
C
Beat Display
No Backlight
Check PCBA
AD/B Change
Inverter/B Change
Power/B Change
Check Panel
Check PCBA
Panel Change
Power/B Change
Inverter/B Change
CNT/B Change
AD/B Change
Check PCBA
VGA cable
DVI cable
Check Wire
Check Panel
Panel Change
OSD/B Change
Check PCBA
Adapter Change
Check Adapter
※
“ Panel Change” Should be Performed to
Level 3
Repair
ViewSonic Corporation
39
Confidential - Do Not Copy
VA1912w-
2
_VA1912wb-
2