Hi
In the winter of 2016 I bought a Beovision Avant 85 (and Beolab 5 and 18) from B&O retailer in Sweden. Since then I discovered that the entire screen has vertical stripes which are most visable during camera panoramic movement or when there is one bright colour on the screen or parts of it (see attachment) I have tried with different sources and with adjusting the settings but nothing has worked.
In my opinion the screen must be defected. I have contacted B&O HQ in Denmark but they refuse to help!! They give the following response:
Thank you for your e-mail regarding your BeoVision Avant 85 - we do apologize for this rather late reply.
Our technical team and our television quality expert have investigated the matter and examined the images provided and based on the information available the conclusion is that the screen of your BeoVision Avant 85, is within specifications.
Please allow us to elaborate further on this conclusion as well as explaining some of our technology choices made for this TV model.
The LCD module used in BeoVision Avant 85 is of the direct-LED backlight type with an array of many LEDs positioned behind the LCD screen. These LEDs can be controlled in small groups, making it possible to reduce backlight intensity locally, depending on scene content. This technique is called local dimming and it improves the local picture contrast drastically, while reducing the energy consumption of the TV significantly for the majority of TV material. A minor drawback of this technique is that it can be more difficult to achieve a fully even uniformity in bright scenes.
LCD modules with edge-LED backlight type (such as in the BeoVision Avant 55) do not have this minor drawback, but they do not benefit in the same way from the better dynamic contrast and the reduced energy consumption.
We would like to point out that the advantages and disadvantages of edge-LED and direct-LED type backlight systems are well known among the different TV set makers in the industry and you will see that different TV set makers have made different technology choices.
Bang & Olufsen have decided to opt for the direct-LED backlight type with local dimming for our largest screen size (75/85") flagship product, because this in our opinion gives the best trade-off between advantages and disadvantages for our customers.
We hope that this has helped to explain the observations you have made.
We hope that this has helped to explain the observations you have made.
Has anyone experienced the same problem with the Avant 75 or 85 or with any other direct led TV? Is it true what they are saying? Are there no reasonable limitations on how much picture defects one can accept? Personally I think Bang and Olufsens response in comparison to the a 25 000 euro price is unacceptable.
