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 device, at which step did the problem occur?
• If you have a PC connected to the device:
• How is your computer confi gured?
• What software were you using when the problem occurred?
• What steps have you already taken to try and rectify the problem?
• Please provide us with your customer number if you have one.
Smart 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
1,920 x 1,080 pixels
, which
are each made up of four sub-pixels (red, green, blue, white), there
are a total of
approx. 6.2 million
control elements in use. Occasionally
pixels 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
pixels 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
58
Troubleshooting
