Does your Samsung plasma suffer from horizontal line bleed? - Page 8

From what I read the Pioneer sets had this problem either to a much lesser extent or not at all. My 2007 700U had no visible line bleed on the green preview screen. I think I had 6000+ hours on it. Besides the line bleed though, the PQ on my GT30 is significantly better my 700U. Besides the year and make of the TV, I think the TV size has a lot to do with whether or not there is noticeable line bleed. The larger the set the more pronounced the line bleed. I went from 50" to 60" so that could be playing a part. On my next TV I'll go at least 65" but maybe as large as 70" so I'm hoping the state of the art doesn't have the problem anymore when the time comes.

Hey guys, trying to figure out if my problem falls under line bleed or other. I have the line bleed (horizontal line from one side to the other) but i also see kinda of like a dark halo around black text on a white background. It does not seem to bleed vertical but just just horizontal. This is in addition to the line bleed so many are seeing. Any one have any ideas if this is normal?

I will get some pics in the next day or so, but may also upload a video as last time the pics did not show it correctly.

Also what is the D-nice panel prep?

While using my screen as a computer monitor I notice the line bleed issue a lot more. I just ignore it but it is most certainly there and visible. I hardly ever notice it while watching tv though.

i'm surprised how many are saying this is common. i'm having this problem with my panny tcp54z1. i didnt have this problem with my last two plasma sets... sammy c8000 and panny 700u. has anyone had this problem corrected or find the root of the problem?

i know nobody currently cares about this thread except for me but this thread is one of the first things that pop up when you google horizontal line bleed so i thought i would complete my story.

so i called panasonic (still under manufact warranty) and had someone come out and check my panasonic tcp54z1 and we ruled out anything other than the tv being the source of the problem (had the same hookup to another tv and the problem disappeared on the other tv. no rolling ground loops). my problem is the exact same as the pictures on page 1 and 3 on this form. whenever something is solid on the screen the whole screen the whole line is dark. the tech said he had NEVER seen this problem before and seemed surprised and bewildered at this issue.

i will update once he contacts panasonic. in the meantime i'm enjoying my 40 inch Viore LOL

for those who say that its normal to have line bleed, i think some of us have it A LOT WORSE than others. its obviously an issue with my tv and like i said i had a c8000 with no line bleed at all (as well as a panny 700U)

I know what line bleed is but I received something much nicer on my barely two year old pn50b860. Which would be a permanent black line horizontally across the bottom of my screen about 5 inches from the bottom. From my reading so far seems like a panel issue. O well at least I got the extended warranty. Crossing fingers for a free replacement that i get to choose.

The other day I noticed that my Samsung 50" plasma had a horizontal black line about 8 inches above the bottom of the screen. It hadn't been there a few hours prior. After making sure the problem didn't come from the cable, I checked my DVD player and Wii system - all had the line which meant it was the television. My TV was purchased in 2008, but fortunately, I'd bought a 5-year extended warranty on the 50" and the 42" purchased at the same time. Trust me, I did not want to pay that extra $399 for the 50" and $199 for the 42"!!! I called the warranty company which sent out a tech the next day. He took one look at the TV and said that the whole unit inside the casing would have to be replaced. The TV had to be taken in for service. The tech also said that often it was easier to replace the television altogether because changing out the inside unit was the same as getting a brand new product. I still have another 10 months on my warranties so I hope my 42" gets the black soon since this defect is common with plasma televisions, especially 50" and up. It can happen as soon as 2 months after purchase. Plasmas have a better picture and truer color that LCDs and LEDs but aren't as sturdy. I guess I'm lucky that it took 4+ years before it happened to me especially since my televisions were bought in Atlanta and, a year later, moved with me to Phoenix on a commercial moving van. I invested $200 for 2 packing boxes made for flat screens to insure they would survive the trip. I wouldn't have been upset if I didn't have the warranty since I can buy a new 50" now for 1/2 of what I paid in 2008.

I recently bought a Panasonic ST50 and it has the same issues. I recorded a video showing the effect in action.

Most annoying anytime you have a sword moving across the screen, or a hand, or use the built in navigation menus as they all make the effect very obvious.

http://m.youtube.com/watch?v=-6_pwLnYr6g

Panasonic have had the TV to test and they tested it against another st50 as a reference point and they have come back and said it is an issue that all st50 tvs have and that they aren't able to fix it.

I'd love to hear from any Panasonic S60 or S64 owners if they feel like this problem is too offensive. I didn't want to completely hijack the S60 thread with fears about this.

I just purchased a 65vt60 and it too has Line Bleeding.

Unfortunately, this is normal.

Not anymore. The F8500 does not have line bleed.

I checked the F8500 out in BB Magnolia , and it had worse line bleed than my VT60.

If you have on that does not, then consider yourself very lucky.

It would be impossible for my set to not have line bleed but other F8500's would.

06.jpg 147k .jpg file 08.jpg 147k .jpg file

I took a usb drive into BB magnolia and viewed test patterns like the ones I attached on a couple of TV's, as 60VT60 and a 64F8500. Both TV's had line bleeding , the 60VT60 was a bit better than mine, and the 64F8500 was worse than mine.

Line bleeding severity can vary from set to set across the same model. If yours does not have line bleeding at all, then consider yourself very lucky.

guv, what settings did you use on both sets in Magnolia?, I dont remember if you adjsuted the settings and if so to what on either set.....

What screen size is your F8500?

I can simulate a "red rash" problem where there appears to be a form of line bleed but it looks different then what the pictures in the thread look like. I adjust Vs voltage of my D6500 turning the trim pot clockwise until this red rash/line bleed fades away completely. If i set it to the factory setting for Vs which is 205 the red rash is still there. Usually on scenes with bright APL.

The red vertical line is a compression artifact, it does not do that on the actual TV.

51.

01.jpg 109k .jpg file 03.jpg 109k .jpg file
I did not adjust settings at all on either TV.

Here are a few more of the test patterns I used. 04.jpg 107k .jpg file

Line bleed is common to all plasmas.

The buffer IC which drives the panel has a high resistance due to the very high density, which causes a voltage drop and subsequent drop in brightness when there is a brighter image in any portion of that line. In addition the plasma panel itself has resistance.

Maybe manufacturers like Pioneer were able to counteract this by increasing the brightness in areas with overall higher brightness (or decreasing the areas elsewhere), but this would come at the price of decreasing the overall brightness on some high contrast scenes.

Tom what do you make of this situation . My voltages are way out of spec on my d6500 . Defaults for say Vscan is 187 but I read over 300 with the digital meter?and it continues to climb where before it was consistent at 187. I did the black level tweak and voltage tweaks. Is something out of wack, perhaps one of the boards? any ideas?

[Duplicate -- please ignore.]

Your meter is broken, or you are using the volt AC mode. If Vscan were way over 187V, you would have an extremely bright black level, and possibly damage to the Y-buffer boards.

I just loaded up that brown and white bar test pattern on my 24" LCD monitor and it has line bleed too. It's incredibly faint; not as bad as a plasma. I'm using HDMI, so it's not a VGA analog signalling issue. Very odd. It's only a basic 24" TN 1080p LCD monitor.

Not getting any noticeable line bleed on the brown image.