since the 5th of October I'm the "proud" owner of the of the year 2011/2012, but there is a problem.
At this moment my TV is at the repair center of Philips (Technorep) with the following complaint:
When watching TV and there are big areas with the same colour (for example soccer) en the camera moving from left to right and visa versa you see from top till buttom lanes from about 2 cm. It look if the leds don't light up enough. It's less noticable when camera moves up and down or visa versa.
At the repair center the complaint is noticed and my TV is compaired with the same one. But this one had the same problem. According to the repair center it is not possible to repair this at this moment. It's a software issue.
A nice woman from Philips headquarters called me to say that at this moment I'm the only one that complaint about this (but she agreed that is was a problem) and therefor it could take sometime before a software update would be written. The more people complain about the same problem the faster a software update would be written.
Therefor I'm ofcourse looking for people with the same problem and start complaining to solve this problem as soon as possible.
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OK, sorry for that.
These stripes exist to some degree also in 9705. I don't think they can be fixed.
You can see them in horizontal pannings in colors like green or sky blue.
thanks for your reply.
I hope you're wrong and they can fix it.
In my case it is realy to a high degree visible.
I also hope they fix it. In my 9705 it is also there, but I don't notice it frequently (or perhaps I have come accustomed to it).
well... there are a number of different kinds of banding (as this is called). The problem can be:
1. in the source, the transmission, the video itself;
2. caused by a bug which, in this case, can be "solved" by disabling "MPEG Artefact Reduction";
3. in the panel which, of course, can only be solved by trying a new panel or;
4. in the backlight which, unfortunately again, can only be solved, if at all, by an exchange.
At first, you could try number 2, as it is the easiest to check. But I'm afraid your problem is number 4. This is the most serious one and can be checked, to see if this is it, by disabling "Dynamic Backlight". If that solves your problem, or at least makes it a lot less apparent, then you now know what to do...
I've noticed the same problem with my set but I haven't noticed the problem anymore with the latest 91-firmware. Maybe they manage to fix it :)
Originally Posted by ericscheepers
Same issue in 52PFL9606!
Since a week I have 52PFL9606 model(LCD panel code 301). It has exactly the same problem - on big homogenous light colored areas when picture is panning one can see irregular vertical stripes of different shade. They don't move with the picture, but stay as if the screen is "dirty" or the LEDs under are not same brightness.
I have to agree it is mostly barely noticeable, but I see it especially when watching skiing events(big chunks of white snow).
Problem is that if it is not the LEDs(which might be SW correctable) then the LCD panels themselves must be faulty. Let me know how can I contact Philips directly to get something going? I don't want to bring this 52" TV set to service centre, just to get the answer that all TVs has it and it must be fixed in FW.
I know what color banding is, but that issue is just NOT it. What we see is vertical stripes inhomogeneity in screen's panel or LEDs intensity.
I am on .93 - issue still present.
I am curious about Philips reaction to this. As I said - problemis hard to notice, but THESE ARE TV sets that COSTS OVER 2000 euro, so they shall be free of such even slight problems in HW.
I am puzzled about the exact same width of the stripes every other stripe with the same intensity.
Originally Posted by zlatko
I saw the same problem in a tv-store in Sweden. If you turn off the Dynamic Backlighting is the problem still there? And how is clouding when Dynamic Backlighting is off?
And I wonder if the 46PFL8606 have the same problem as this tv?
The problem is always there, no matter what enhancements you turn OFF/ON, no matter what settings you use. I can not notice clouding when dynamic backlight is OFF, screen is pretty uniform.
I do not think 8606 has the same issue, cause it uses different type of display/backlight. But who knows? You better check yourself.
I have the same problems of vertical banding with my 9706 tv mainly with moving camera and large surface with the same colour like a football field or blue sky.
Very dissapointing. I have mentioned the problem to Philips Service. If this cannot be solved I want to return the TV.
If you find this problem very annoying and have the opportunity to return the TV, you should probably do that. I canít see any sign that this will be solved.
Originally Posted by Jvdv23
This problem has been present on the 2010 model 9705 since its launch, and evidently is a problem on the 9706 as well. By launching a new model with the same problem Philips shows that they donít take this deterioration of video quality very serious.
I have never seen any change of the vertical bands characteristics after a software upgrade on my 46pfl9705, so I donít think it will be fixed in any software. This is supported by a sense that Philips seems to avoid comment on this problem. They are probably aware of the problem, but know that they wonít do anything about it.
With all backlit/contrast enhancements disabled I cannot see clouding or other problems in static pictures. But on moving images banding is there without doubt/discussion. Hence I'd think it's a SW issue which may may not be easy to solve (like ink jet printers in the old days). This does not exclude that some panels may suffer from an uneven light emissions from the backlight diodes, but even that could perhaps be calibrated to a certain extent, which would possible be more expensive than changing the entire panel.