LCD Screen Failure Case Share

  1. The below cases are just some examples of common LCD screen failures, not all of them.
  2. The below cases photos are edited and processed on the basis of the original data photos.
    Individual failure phenomena have been highlighted for easy observation.
  3. The remarks of “Can repair?” only represent personal opinions. Although many factors and site operability are considered as much as possible in the definition, due to the influence of factors such as tools, accessories, and actual failure characteristics, A failure that some remarks can fix may not be fixed in the implementation, and vice versa. It is suggested that the reliable repair information should be judged by the screen repairing unit according to the fault phenomenon. Please refer to the opinion of the maintenance unit for confirmation of the specific maintenance capability and information on whether it can be repaired.
Item Type Fault Photo Can repair? Reason
1 Line fault Always bright vertical line (half-line) regardless of color NO  
2   Always bright
vertical belt(half-line) colorinsensitive
NO  
3   Dark vertical line gray line colorless NO  
4   Dark vertical line(half line) gray line colorless NO  
5   Always bright
horizontal
line(half line) colorinsensitive
NO  
6   Dark horizontal line gray line colorless NO  
7   Dark horizontal line(half line) gray line colorless NO  
8   Dark cross gray line colorless NO  
9   Bright cross colorinsensitive There is a stress point electrode damage NO  
10   External injury (there is a force point) NO  
11   External injury
(there is a
force point)
NO  
12   external injury (there is a force point) NO  
13   Physical damage NO  
14   LCD vertical lines
Accompanying spots leak
NO  
15   LCD screen dark spot leakage NO  
16   LCD screen dark spot leakage NO  
17   LCD screen color spots non-leakage NO  
18   LCD screen color spots non-leakage NO  
19   Half of image is normal, half of image is upside down NO Other
substrate
issues
20   Image folding NO system
settings
problem
21   A certain base color of image is abnormal NO Other
substrate
issue
22   Image light and dark balance is abnormal NO Other
substrate
issue
23   A certain primary color signal of the image is lost NO Other
substrate
issue
24   Image luminance signal loss NO Other
substrate
issue
25   Images are out
of sync
NO Other
substrate
issue
26   Image noise bands are not the same NO Other
substrate
issue
27   Partial backlight not bright CCFL NO  
28   Partial backlight
not bright CCFL
NO Other
substrate
issue
29   There are even
dark horizontal
lines on image
Quantity is 22
or 44
NO Other
substrate
issue
30   Image trailing NO Software
or other
board
issue