LCD-Panel Burn-In on Epson 6500UB!

I'm running the projector with high brightness settings. It's one of the first batch and it had pretty bad thermal focus, image position, zoom, etc. shifting when warming up. Just when I was about to RMA it, these issues vanished and I was really happy with it, because it has near perfect convergence and no stuck / dead pixels.


But now the LCD panels are damaged! What a disappointment!


I've attached a photo of the problem. The projector is displaying a dark gray background and you can see (I hope it can be seen clearly) the dark bars at the top and the bottom where it actually should be the same shade of gray all over the image (the other darker areas and patterns come from the screen, which is not perfectly plain and the stuck pixels are from the camera, so please disregard them).


I'll have to call Epson at Monday. However, even if they replace the unit, it's still very irritating, because I just have 270 hours on the device now. Probably the same will happen after a while again?


Does anybody else see this issue on their devices?


Regards!

@ChrisW6ATV: you are probably right that such "image retention" could be cured by cycling colors or switching the panels on/off rapidly over a long period of time, but I've read that this is just a temporary fix, because once the panels show this issue, it will always come back - and very quickly. Somebody reported that even just a few minutes of a static image would now cause the retention to show. Also, I think a device that was only used for 270 hours should not show this problem at all. Maybe after several thousands of hours, but certainly not so fast.


@rob47v: yes, the TW5000 has an iris, and but I leave it open all the time, because I need the light! My screen is 3,5 x 2 meters and the reason I got the Epson was for its great light output. Also, I don't see how lowering the light output could fix the problem? It shows the most in dark images, not in bright scenes. Maybe a closed iris lets less heat to the panels and thus preventing the burn in? But now they are already burnt in, I'm not sure this would help.


Regards!

It's not just black, but with all colors. It seems to affect blue tones the most, but I can see discoloration of all colors in the affected areas. Not visible in bright scenes, but often very visible in dark scenes. I'm sure I'm not using wrong settings, black levels, etc, because I didn't change anything and the picture was always perfect until a few days ago when I noticed the burn in.


I've watched "Big Stan" yesterday (1.85:1) and the issue was visible, but not too bad. So I think about watching the issue for a few days / weeks before contacting Epson, because I really fear getting a worse device (when looking at the various reports of people here having to exchange many times to get an acceptable one).


On the other hand, I think such a burn in is unacceptable and Epson must fix this for me. However, how can I be sure it will not happen again with the replacement? Difficult...


Regards!



Quote:
Originally Posted by MHoefler /forum/post/16849887


It's not just black, but with all colors. It seems to affect blue tones the most, but I can see discoloration of all colors in the affected areas. Not visible in bright scenes, but often very visible in dark scenes. I'm sure I'm not using wrong settings, black levels, etc, because I didn't change anything and the picture was always perfect until a few days ago when I noticed the burn in.


I've watched "Big Stan" yesterday (1.85:1) and the issue was visible, but not too bad. So I think about watching the issue for a few days / weeks before contacting Epson, because I really fear getting a worse device (when looking at the various reports of people here having to exchange many times to get an acceptable one).


On the other hand, I think such a burn in is unacceptable and Epson must fix this for me. However, how can I be sure it will not happen again with the replacement? Difficult...


Regards!

Click to expand...

That's strange...



Put in a full screen source like HDTV and leave it on for a few hours...see if it fixes itself...


I didnt think burn in was a problem with these pjs...

Hi!


Today I got my projector back from the service center. They didn't replace it, but "repair" it (whatever this means). Indeed it was the same unit (serial number), firmware updated to v1.09. Lens shift still sucks (adjusting one changes the other axis, etc.) and so it took me about 30 minutes to adjust everything properly. During that time, the menu of the projector was displayed, so that I could adjust the focus.


After setting the unit up, I immediately opened a dark gray bitmap image to see if the burn in of the black bars was gone. And indeed it was.


HOWEVER: the menu, which was just displayed for 30 minutes was clearly burned in! I thought, oh my god, what's that supposed to be now? So I started a movie to see if it would go away. It didn't! The menu even was visible in dark scenes of the movie!


After another 20-30 minutes, I displayed the gray background again to see how the burn in developed. Guess what: the menu still was visible and furthermore the black bars burn in was also back!


I've attached a photo. You can not only see the black bars and the menu structure, but you can even read the menu items! Horrible! Also, some parts of a window on the computer desktop are visible. Burned in in just a few minutes.


So this is what Epson calls "repair"? Obviously, the panels in my unit are broken and they didn't repair them, but somehow just cleared the original burn in. But everything (and more) comes back after just a few minutes...


What should I do now?


Regards!

Yes, I do run it at high brightness (vivid, lamp mode high, iris off), but I need the lumens! That's the reason why I got the Epson in the first place! My screen is huge: 355x198 cm, so I need the high light output.


Why should I be "nicer" to my projector? I run it within it's specifications and why should it break when I use it that way? I've always set all my projector to the maximum light output (due to the large screen) and this is the first one that shows retention (or burn in or whatever this is). Unacceptable, if you ask me. If the device can't handle the light, it should not offer the high brightness modes.


Here in Europe, they even sell the TW5000 as a "Light Power Edition" with an additional color filter (for correct colors). And it's supposed to run at the highest brightness settings when using this filter (I don't use the filter, by the way).


Regards!