Troubleshooting Analysis - Sharp LC-20SH21U Service Manual

9. Troubleshooting analysis

Defect Mode
Light On
Test
Abnormal
Display
A
Failure Analysis
Missing Line
Bright Dot
Dark Dot
Backlight
Light Leakage
Chrominance
non-uniformity
Image Sticking
Brightness Spot
Particle
Dot Defect
No Display
Noise
23
Repair
Check PCBA M/B Change
Check Panel Panel Change
Check Panel Panel Change
Inverter Board
Change
M/B Change
Check PCBA
Power Board
Change
Check Panel Panel Change
Check PCBA
M/B Change
Check Panel Panel Change
Next Step
LC-20SH21U
Testing
Test
NG
Complete