Trouble Shooting; Main Board - AOC LM2028 Service Manual

8.2 TROUBLE SHOOTING

8.2.1 Main board

Defect Mode
Abnormal
Display
A
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Failure Analysis
Missing Line
Bright Dot
Dark Dot
Light Leakage
Mura
Image Sticking
Dot Defect
Brightness Spot
Dot Defect
Particle
No display
Noise
QQ:505966338
Check Panel
Check Power Board
Check Main board
Check Panel
Check Keyboard
Check Line Connected
Power board and Main board
Check Main board
Check Panel
Next Step
Page 29 of 66
Repair Testing
Panel Change
Change Power Board
Change Main board
Change Panel
Change Keyboard
Change Wires
Change Main board
Change Panel
NG
AOC LM2028
Test
Completed