To preface this I have had 2 P50ST30s (one replacement because of the problems I will talk about below) and Amazon was awesome with the whole return and replacement. One of the best companies I have dealt with. This is a very long review as I would like you to understand what you are buying beforehand.
ALL VERSIONS OF PANASONIC 2011 TVs ARE EXHIBITING THIS PROBLEM.
I was excited when I first set up my TV and took the time to age the phosphors in the TV for 150 hours by running slides (a step that can be skipped but the phosphors degrade in the first 100 hours faster than the rest of it's life). I set up the blu-ray player and after dialing in the settings it looked awesome. Then the brightness fluctuations happened.
The best way I can explain brightness fluctuations ( Fluctuating Brightness or FBr) is will be a leap in lighting. When you have a dark scene the whole picture will darken some to give more detail to a shadowed area. It is necessary to give great picture quality in any plasma. Normally what will happen is that it will gradually fade into darker or lighter, this TV does it all in one step. A drastic comparison would be a pitch black room where you turn a light on vs turning a dimmer light on gradually. What you see on the screen is picture that will switch from dark to lighter. It is most noticeable when you have 2 scenes switching back and forth (think dialogue between 2 characters where it switches between ones face to the other) and one scene is darker than the other. You can easily see this in the movie Hereafter around minute 40.
This problem is exacerbated by a delay in the video processing of the switch between darker scenes and lighter scenes. In almost all video they will have scenes cut and pasted together. When this happens the lighting usually will change for various reasons. When the scenes cut from one to another this TV will take about 0.5-1 second to process the lighting difference to adjust to give more detail to shadowed areas. Given that it does it in one leap as mentioned above, it severely distracts you from watching the movie and enjoying it.
Darker Movies will usually bring out these symptoms to it's max. When I went to watch Harry Potter and the Deathly Hallows Part 1, I came to the point where I started counting the fluctuations instead of watching the movie. I counted 56 total in one watching. My wife didn't watch HP with me but she commented on it while watching Castle a few times, then more and more on other shows.
The reviews are definitely favorable as it has a great picture quality without doubt. Most professional reviewers mention fluctuating brightness problem, but gloss over it. Why they did I am not sure. It seems that some sets show this dramatically, while others don't. My first one (the one I counted 56 fluctuations on for HP) I would say was very bad compared to a slightly less worse one that I got the second time around. I re watched HP on the second one to see if I could just enjoy the movie, got to the point I started counting again and only counter 32 which were more tame but still easy to spot without even looking for them. To make sure it just wasn't me seeing things because I knew when they were, I made (yes she wasn't to happy about it) her watch Tron with me. We first started Tron in 2d and she saw it some; then I popped in the 3d disc and she was pointing it out in every other scene.
I placed a complaint with US Panasonic as this was unacceptable, trying to explain it the best as I am now. I was walked through changing multiple settings (CATS off, trying all modes, changing contrast and all other settings, using 3 different HDMI cables along with composite and component cables) with nothing relieving the issue. Their response was that this is a feature of the TV and that it was working properly. Some of their exact words in the email I later received were " the picture dimming (fluctuating brightness) is negligible and should be considered within the TV's design specification."
In Spain a gentleman Documented this for Panasonic to prove that something was wrong. If you would like to see how bad this is; there has been a video posted by a member of a great forum for high def junkies that shows this instance (Google " VT30 hereafter " and it will show in the youtube vids) if you would like to see exactly what I am talking about. The TV here was the VT series which is Panasonic's flagship model and cost well over $1,200 of this TV.
Since the posting of the above video Spain got a firmware update to 1.520. The same person posted the exact same scene with the same setup which you can also view by clicking on his name or clicking on it on the right hand side. It eliminates this problem, since then Europe Panasonic have acknowledged that there is something that they are looking into (circumventing saying there is a problem). But US Panasonic calls this a feature that is working as intended. Unlike US Panasonic which I have opened 2 cases with them about this problem, one for both TVs, and just receive it's a feature of the TV which is working properly...
I am hoping that this is heeded as a warning to many as I feel terrible about Amazon being outstanding in it's Customer Service trying to rectify what is obviously not their fault. I am a man that researches any large purchase to the T to try to avoid these problems. I weighed my options and since the professional reviewers either made no mention of this problem or said it was a minor problem; I decided to buy this Panasonic. I post this in hopes that those that do their research won't feel gypped as I do.
If you would like to read more comments a Facebook page was created in hope that it would have an effect as it did with Sony. It is on facebook under "My 2011 Panasonic TV is Defective".
UPDATE 7/26 : Various Panasonic emails have said that there will be an announcement this Wednesday 7/27. Also a A reliable higher up in Panasonic NA has said that there is a FW that will be aimed at fixing "panel dimming" very soon (this term has a different meaning then Fluctuating Brightness, but all other FW fixes in Europe that fixed the FBr were released to fix another problem). This could or could not be a fix to the above problems, but hopefully putting 2 and 2 together means we will be getting a FW fix this Wednesday. Whether this is a fix to the above problems or not remains to be seen. Since I published this report it has been confirmed that all European models are now shipped with the Firmware that fixes FBr, while here in NA it hasn't been addressed. Here is to hoping for a statement Wednesday.
*UPDATE* 8/6/11 : First there has been no true announcement from Panasonic NA as of yet. But after getting all the data collected and sent forward to the engineers (yes many people that owned the TV put in this work), the engineers were able to replicate the problem. Since then there is now a patch. This is not a Firmware update, instead it changes other "software" in the TV like the EEPROM. Since it is not strictly a Firmware update they cannot simply have your tv download it from the internet like normal. It REQUIRES, at least as of right now, a tech to come out to install it on your TV.
Note that this fix has been confirmed to be loaded on TVs coming from the factory now. When this change occurred I cannot tell you neither can anyone that you can talk to, so please do not hound amazon, Panasonic or any other retailer. I assume the earliest we will see TVs with this update will be very late July produced TVs if not August. If you decide to buy a TV from Amazon please just allow them to come out and patch the TV instead of sending it back. If you send it back Amazon has to eat the shipping and this is one company that tries it's hardest to help the customer. So please do not make them eat the cost or else they WILL eventually have to change the policies they have. It may take a few weeks to get the rep out, butit is worth it to allow amazon to keep its very lax and customer happiness driven CS.
Now onto the results :
I have had this patch on my TVs for 2 days now. I compiled a list of FBr material that was bad during the data collection phase before we passed this on to the Panasonic Engineers so I had a list prepared to test this afterward to see if it was fixed or not. Running through 20 of the worst scenes over 6 movies (Harry Potter Deathly Hallows 1, Tron, Casino Royale, Hereafter, Battlefield LA). In these movies I saw not 1 noticeable FBr ( I say noticeable because FBr is in the driving mechanism of this TV). I noticed only 1 instance of a small FBr in the movie The Rite, but it was under extreme circumstances (dark background to near white background with a shadowed face in a scene change). Besides that I also watched some streamed video (Master Chef, True Blood, Band of Brothers etc) and got the same results of no FBr. Gaming (Fallout 3, Dragon Age Origins and Gears of War 2) was also the same, no FBr.
Overall it fixed the problem almost completely, if not completely. This patch surpassed my expectations and Panasonic owned up and fixed a glaring problem. There have been 3 forum users that have this fix and posted about it. They all report the same thing.
If you have purchased this TV or any other Panasonic NA ST30, GT30 or VT30 and have the problems mentioned above please call 1-800-973-4390. This is Panasonic Concierge and this is the number that was requested to call by the engineers. Tell them you have Fluctuating Brightness. Low end techs have been sent a memo regarding this. Many are now receiving emails to set up appointments.
Because of this fix I have amended my score of the TV. For this price this TV is amazing.
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