6500UB Magenta Band at bottom of Screen :-( - AVS Forum
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post #1 of 12 Old 10-29-2011, 03:08 PM - Thread Starter
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Well I have had my Epson 6500UB for two years and two months and yesterday appeared a magenta band on the bottom of the screen. I called Epson and since it is two months out of warranty they just referred me to a 3rd party service center. The service center told me it could be an alignment issue which would cost about $350 or if it is the optical engine it's closer to $1800 which is the cost of a new projector. Any ideas on how serious this issue is? I have searched and have seen that it is a common problem but it was a while ago and those people were covered under warranty and received refurbished units. This is sad seeing as the projector has only about 1500 hours on it total. I will definitely be buying the extended warranty next time! Thanks for any advice.
LL
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post #2 of 12 Old 10-30-2011, 01:44 PM
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I came on here looking for similar answer. My 8500UB has the same band on the bottom. Mine is maybe a year or so old.
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post #3 of 12 Old 10-31-2011, 08:42 PM - Thread Starter
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Well you have no issues, you can send yours in under the warranty..
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post #4 of 12 Old 11-01-2011, 11:04 AM
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Hi infinity999
The problem is related with the green polarizer/LCD (absence of green = magenta).
Did it happened suddenly?
I had a Panasonic PJ (ceiling mounted) with the same problem and in my case, the heat melted somehow the glue that kept the polarizer within its frame and that allowed the polarizer to slides down a little.
See this:
http://www.avsforum.com/avs-vb/showt...=#post14085040
Sorry my grammar (english basic + google)
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post #5 of 12 Old 11-01-2011, 11:43 PM - Thread Starter
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So I took the projector apart. Didn't notice any dirt/dust in the light engine assembly. I cleaned the polarizers and put it back together. The magenta band is still there, but it does seem a bit better for some odd reason. I don't think the polarizer has moved since it is mounted securely. Maybe the green lcd panel is screwed up? I don't know. I may just live with it or perhaps take it in for service unless someone has a better idea. Any input is appreciated.
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post #6 of 12 Old 11-02-2011, 09:48 AM
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I have the same projector, and mine is worse. Makes me wonder if these new epsons (5010) with their new panels will be any more 'robust'. Very annoying for sure. What I did was 'zoom out' enough to where the magenta hue was pushed down into the black velvet on my screen. Of course this screws up the overscan a little, but it's worth it instead of having to look at that stupid tint at the bottom.

The real problem is that this issue developed after a year and a half or so. So even if you get a refurbished projector, the problem still has the potential to arise again (and again).

You're lucky, because your screen uniformity looks better than mine (mine skews slightly to green as you move left), and my magenta line is bigger!
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post #7 of 12 Old 11-02-2011, 08:37 PM - Thread Starter
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Yeah it's just sort of irritating to me. I suspect that the green lcd panel is the issue. Can one of these be replaced or I wonder if the service center will want to replace the whole light engine, which is almost as much as a new projector..
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post #8 of 12 Old 07-05-2012, 04:29 PM
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I've got an 8500UB with less than 360 hrs on it that just developed the pink band across the bottom. Since it's about 6 months out of warranty and the nearest service center is about 4 hrs away I think I'll take a stab pulling it apart to see if something in the green light path has slipped. Hopefully it will be obvious and I won't mess anything else up in the process. It certainly would be nice to find a service manual.
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post #9 of 12 Old 07-06-2012, 12:32 PM
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Quote:
Originally Posted by jsharpe View Post

I've got an 8500UB with less than 360 hrs on it that just developed the pink band across the bottom. Since it's about 6 months out of warranty and the nearest service center is about 4 hrs away I think I'll take a stab pulling it apart to see if something in the green light path has slipped. Hopefully it will be obvious and I won't mess anything else up in the process. It certainly would be nice to find a service manual.

It's not usually obvious. It IS usually an element that has shifted slightly, but that shift is generally so small you won't see it by eye.

I have fixed a few LCD projectors by firmly re-seating the elements in the light path, but none were "obvious".

Don't forget the first lens right after the lamp. It often shifts a little due to the high thermal cycles. They also don't always just move when you push on them.
I have a Panasonic that had bands on the top and bottom. It was the first lens, and only seated with a solid THUNK after pushing quite firmly down on it..... Perfect picture again.

Good luck, and be careful.

Welcome to the darkside.....
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post #10 of 12 Old 07-08-2012, 05:49 PM
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Well after opening it up and inspecting all the various optical elements I didn't find anything out of place or even slightly out of alignment. However, the polarizing filters could be gently moved against their adhesive so I adjusted the green one slightly in the direction opposite how gravity would have pulled it when ceiling mounted. Unfortunately it didn't help as it still has the magenta line at the bottom. So I guess it's off to a service center and hope the bill won't be more than it's worth.
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post #11 of 12 Old 07-09-2012, 11:10 AM
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Quote:
Originally Posted by jsharpe View Post

Well after opening it up and inspecting all the various optical elements I didn't find anything out of place or even slightly out of alignment.

I told you, you won't visually SEE a mis-alignment. It's THAT small. Been there.

Welcome to the darkside.....
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post #12 of 12 Old 07-09-2012, 01:40 PM
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Yep, I was fairly warned. smile.gif I wasn't expecting much but even looking for sub-millimeter movement under magnification nothing still showed up.
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