Panasonic 2012 Gray Band Issue (right-side) - AVS Forum
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post #1 of 27 Old 06-23-2012, 04:33 PM - Thread Starter
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I noticed this on my panasonic st50 60". It looks like a faint gray vertical bar on the right side of the screen. It's really noticeable during grey slides or mid tone screens. It is definitely visible during some normal content to varying degrees. I would like to know if anyone else is having this experience? Here's a photo from my set;
700

This topic has been somewhat documented in other forums.

http://www.avforums.com/forums/plasma-tvs/1619948-panasonic-50-series-faults-poll.html

And finally here's an interest ing quote from the AVForums UK:

"I emailed Panasonic yesterday regarding the DSEB (band on right of the screen) problem and the issue related to light passing through the rear vents and panel (I believe this to be 50" specific).

Here was their response...



"Thank you for the images on the banding, I can confirm that we have had this particular question checked out with our QA and Factory, they have said that the line you see is within specification and is due to the way the Panel has to be made, so I am afraid that nothing can be done, as all panels have to be made this way.

With regards to the light you see through the Panel from the back there is a resolve for this but it needs to go to a Service Centre to be sorted."




Interesting...confused.gif

things are going to get worse and worse and never get better again.
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post #2 of 27 Old 06-23-2012, 06:34 PM
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It appears to be line bleed, and according to other threads, it is normal.

http://www.avsforum.com/t/1379303/panasonic-st30-scrolling-text-issue/0_100

http://www.avsforum.com/t/1317218/tcp42c2-whats-wrong-with-my-panel/0_100

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post #3 of 27 Old 06-23-2012, 06:52 PM
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The faint vertical lines seen only on darker gray slide images appears to be typical on the 2012 Panasonics like the ST50s.
My 50ST50 had that only visible close up on darker gray slides.
It has faded a lot after running the slides for 100+ hours though.
Fortunately none of it is visible in typical videos.
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post #4 of 27 Old 06-23-2012, 07:34 PM - Thread Starter
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Quote:
Originally Posted by tomwil View Post

It appears to be line bleed, and according to other threads, it is normal.
http://www.avsforum.com/t/1379303/panasonic-st30-scrolling-text-issue/0_100
http://www.avsforum.com/t/1317218/tcp42c2-whats-wrong-with-my-panel/0_100

I'm only referring to the vertical band which is NOT line bleed.

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post #5 of 27 Old 06-23-2012, 09:06 PM - Thread Starter
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Quote:
Originally Posted by Joxer View Post

The faint vertical lines seen only on darker gray slide images appears to be typical on the 2012 Panasonics like the ST50s.
My 50ST50 had that only visible close up on darker gray slides.
It has faded a lot after running the slides for 100+ hours though.
Fortunately none of it is visible in typical videos.

And yes I notice it during normal content. Though its degree varies.

things are going to get worse and worse and never get better again.
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post #6 of 27 Old 06-23-2012, 09:35 PM
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About how many active hours do you have on your set?
Have you tried running the slides of different white and gray fullscreen images for several hours each day?
A lot of the background stuff faded quite a bit for me after running the slides for several days at the beginning.
I could monitor it from the slides while they ran each day too.
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post #7 of 27 Old 06-23-2012, 10:07 PM
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Quote:
Originally Posted by stuart81 View Post

I noticed this on my panasonic st50 60". It looks like a faint gray vertical bar on the right side of the screen. It's really noticeable during grey slides or mid tone screens. It is definitely visible during some normal content to varying degrees. I would like to know if anyone else is having this experience?
This topic has been somewhat documented in other forums.

As you noted, this topic has indeed been brought up on other threads.

Our 60" ST50 also arrived with what appeared to be a "shadow" just to the inside of the right bezel - looked very similar to what your photo is showing.

FWIW, by the time our "new panel aging routine" was completed, the vertical line had dissipated. Might be possible to still see a HINT of it given the "proper" screen to look at - but it was never bothersome during normal program material, and certainly is not now.

Light passing through the rear panel was also noted by a ST50 owner very soon after the panels were introduced.
Was able to duplicate the effect by shining a Bright Flashlight through the vents at the upper rear of the panel - but frankly, we do not watch tv with someone shining a bright light into the rear of the panel... rolleyes.gif
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post #8 of 27 Old 06-24-2012, 01:08 AM - Thread Starter
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Quote:
Originally Posted by Joxer View Post

About how many active hours do you have on your set?
Have you tried running the slides of different white and gray fullscreen images for several hours each day?
A lot of the background stuff faded quite a bit for me after running the slides for several days at the beginning.
I could monitor it from the slides while they ran each day too.

I don't really know how many hours I have on the television. I've been watching blurays for a month now. Maybe one movie a day.
I'll be interested to see if the shadow goes away after further viewing.

But, as it stands now, I notice fairly regularly during movie content. It's most evident in the gray mid tones. During really colorful stuff like skies it's not noticeable. Still, it kind of sucks. I've always admired plasma for its amazing uniformity, but it seems that this set if the first step in the opposite direction. It's not really a deal breaker for me. I've learned to live with way worse televisions and this tv is an excellent performer I hope it goes away.

things are going to get worse and worse and never get better again.
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post #9 of 27 Old 06-26-2012, 12:02 PM
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Anyone else with this? Since Panasonic seems to know what it is, do you think they'll modify the production to take care of it? I can't imagine waiting another year to get a TV because of something like this.

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post #10 of 27 Old 06-26-2012, 12:11 PM
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Had this on a GT50. Most noticeable with soccer. Had 500 hours on the set with no improvement. Replaced it with a UT50 which also demonstrates the same thing.
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post #11 of 27 Old 06-27-2012, 12:12 PM - Thread Starter
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Yeah, I think it's just a characteristic of 2012 Panasonic plasmas.

things are going to get worse and worse and never get better again.
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post #12 of 27 Old 06-27-2012, 12:29 PM
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ETA: Hang on... you're talking about the vertical band. I don't think I've noticed that, but I'll keep a look out for it. I guess what I've been seeing is the line bleed.

I've been noticing the same thing with the 55" UT50. It does it with the TV menus, the cable super-imposed guide for forwarding content, other superimposed things on regular cable tv programming such as the score on the soccer games, superimposed blocks of color or black over solid colors during tv commercials, and occasionally during TV programs with regular people moving over a grey bkg. I notice it the most with the menus and it took me a while to notice it during regular programs and at that point I wondered if it was my signal. I guess it is isn't.

What do they mean by light shining through the vents of the back of the panel? Would that mean that if someone had the tv mounted on the wall or near a wall that it would be less noticeable because less light would be passing through?
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post #13 of 27 Old 06-27-2012, 07:59 PM - Thread Starter
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Line bleed is not the issue. Though line bleed is pretty common in plasma, what I'm referring to is something different. I'm talking about the vertical bar. It's almost to the right side edge of the picture and it often looks like a shadow over the image.

things are going to get worse and worse and never get better again.
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post #14 of 27 Old 06-28-2012, 02:48 PM
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If this happens on every single set, then why don't the reviewers harp on it? They measure color accuracy to a crazy degree, and yet they miss giant vertical lines? Oh brother... This is why I trust owners and not reviewers.

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post #15 of 27 Old 06-28-2012, 09:09 PM - Thread Starter
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I'm guessing the reviewers don't think that is that important. And honestly most of the time it's not that big of a deal. I don't think most people will have a problem with it. I don't really have a problem with it most of the time. It's just those few selects times when I see that it drives me crazy. One of the things that really attracted me to plasma televisions with the supreme uniformity of the screen. With the Panasonic plasmas this year it seems like they are less uniform. At least they still have off angle viewing down.

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post #16 of 27 Old 06-28-2012, 09:44 PM
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Dude just exchange the set

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post #17 of 27 Old 06-29-2012, 02:26 AM - Thread Starter
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Quote:
Originally Posted by jbrady3324 View Post

Dude just exchange the set

Did you not read the part where Panasonic considers this defect to be operating within normal parameters? And besides, I genuinely enjoy the set. I'm not trying to be snarky. Just realistic about possible issues with the set. Even with the gray bar, I'd still recommend the set because of the great black level performance.

things are going to get worse and worse and never get better again.
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post #18 of 27 Old 06-29-2012, 02:40 AM
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It does look odd on some darker gray full screen slides, but I haven't seen any issue on regular video content on my 50ST50.
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post #19 of 27 Old 07-19-2012, 08:26 AM - Thread Starter
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More examples from actual content ;




things are going to get worse and worse and never get better again.
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post #20 of 27 Old 07-19-2012, 01:27 PM
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Quote:
Originally Posted by stuart81 View Post

More examples from actual content ;
...

That looks similar to the "shadow" we had on our 60ST50 - and is in almost exactly the same location.

But - from your photos - it also appears a bit Darker (more visible) than on our set, whose shadow was really visible ONLY on a couple of solid gray slides.

As noted earlier, this Glitch seems to have "completely" disappeared on our panel (I cannot see it, so therefore assume it IS gone...).

If you haven't done so already (and perhaps even if you HAVE), would try running Slides / Other Full-Screen Content (like Animation) for 12 - 18 hours / day, for a number of days in a row.
NOTE: No reason why you cannot do this IN ADDITION TO whatever "normal programming" you like to view (!) - instead of turning the TV "OFF" when your show is compete, toss in a SD card with slides, or put some other full-screen programming on - using Aspect or Zoom controls to ensure logos, streaming tickers, etc get safely moved off-screen.

That is a shot in the dark, but it DOES largely replicate our "new panel aging routine" - and for SOME reason, our panel has "self-corrected."
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post #21 of 27 Old 07-19-2012, 07:19 PM - Thread Starter
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Is it still visible on those grey slides on your set?

things are going to get worse and worse and never get better again.
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post #22 of 27 Old 08-13-2012, 05:01 PM
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I've seen this on the vt20 as well I went through 3 sets befor I gave up and went for a Sony. I've also had a vt30 that had it very very faintly but could only see it on slides. My vt50 is the same as well. Some sets have it worst then others and yours looks like one of the bad ones. Might be a good idea to exchange the set or grove it a little more time to break in.
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post #23 of 27 Old 08-14-2012, 11:57 PM
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Quote:
Originally Posted by stuart81 View Post

More examples from actual content ;




Looking at these pictures, it appears the band is of varying width. Is that right?
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post #24 of 27 Old 08-22-2012, 01:00 AM - Thread Starter
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No, I would say it's a fairly constant width. Could it be the louvre filter? But then why would it only be visible with some content? I wonder if the ut50 sets have the issue.

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post #25 of 27 Old 08-22-2012, 04:29 AM
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Quote:
Originally Posted by stuart81 View Post

No, I would say it's a fairly constant width. Could it be the louvre filter? But then why would it only be visible with some content? I wonder if the ut50 sets have the issue.

No, it isn't the filter and yes, the UT is affected too.
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post #26 of 27 Old 08-22-2012, 05:15 AM
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Quote:
Originally Posted by Adamd View Post

I've seen this on the vt20 as well I went through 3 sets befor I gave up and went for a Sony. I've also had a vt30 that had it very very faintly but could only see it on slides. My vt50 is the same as well. Some sets have it worst then others and yours looks like one of the bad ones. Might be a good idea to exchange the set or grove it a little more time to break in.

@Adam: What Sony did you get to replace the plasma
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post #27 of 27 Old 08-27-2012, 03:45 PM
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Originally Posted by jigijunk View Post

@Adam: What Sony did you get to replace the plasma


I got the hx800, but I sold that set to my brother after the vt30 was released and I now have the vt50.....I also had the sharp elite but returned it for the vt50.....I guess I'm a sucker for plasma.
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