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Troubleshooting
Do you need more help?
If the suggestions in the previous section did not solve your problem, please contact us. To make it easier for us to
help you, please have the following information to hand:
• What external devices are connected?
• What messages appear on the screen?
• When operating the product, at which step did the problem occur?
• What steps have you already taken to try and rectify the problem?
Please provide your customer number if you have one.
Full HD LED LCD TV pixel faults
Despite the most modern production methods, in rare cases there
may be individual or multiple pixel drop-outs (dead pixels) due to the
highly complex technology.
For active matrix TFTs with a resolution of
1920 x 1080 pixels
, which
are each made up of three sub-pixels (red, green, blue), there are a
total of
approx. 6.2 million
control elements in use. Occasionally pix-
els or individual sub-pixels can fail or become incorrectly controlled
because of this very high number of transistors and the associated
extremely complex manufacturing processes used.
Pixel fault class
Defect type 1
Continuously lit pixel
Defect type 2
Continuously black pixel
Defect type 3
Defective sub-pixel
lit
black
0
0
0
0
0
I
1
1
2
1
0
1
3
5
II
2
2
5
5-n*
0
0
2xn*
10
III
5
15
50
50-n*
0
0
2xn*
100
IV
50
150
500
500-n*
0
0
2xn*
1000
n*=1.5
The permitted number of defects for every type named above in each class of pixel defect refers to one million pix-
els and must be converted accordingly to match the physical resolution of the display.
Your device complies with the European ISO 9241-307 Class II standard (pixel fault class).
5 Pixel
Rows
Sub-Pixel
Pixel
blue
green
red
5 P
ix
e
l
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