Epson 8500UB 200,000:1 CR - Page 122 - AVS Forum | Home Theater Discussions And Reviews
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post #3631 of 3638 Old 03-21-2014, 10:32 AM
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The 8350 new on Amazon is 1249 I have yet to see it 900 new or even close to that used. Like I said the 8500ub with 150" screen for 750 was a deal too good so I took it.
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post #3632 of 3638 Old 03-21-2014, 10:42 AM
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I bought my replacement OEM blub from projectorzone.com for $250, $50 less than from Mitsubishi. It's in the exact same package that the original blub comes in.

...finally retired and spending time in my HT!!!

My equipment consists of: Epson 9500 UB Projector(Avical ISFd); 110" 16x9 JKP Affinity Screen; Panny BD30 Player, Tosh HDA1 Player; Definitive Speakers (Center, Towers, Rear); Onkyo 608 A/V Receiver; Nevo Q50 Remote; TWC DVR-HD Cable Box; 5 Bello chairs.
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post #3633 of 3638 Old 03-21-2014, 12:22 PM
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Thank you inspector I will keep that in mind when I go to get a replacement bulb.
How many hours did you get off those bulbs from Projectorzone? Are these teh same bulbs with premature lamp failure.
Or the fixed ones Epson claims to have replaced that is on their official website? Anyone buy bulbs directly from Epson
and gotten a good amount of hours from them?
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post #3634 of 3638 Old 03-21-2014, 01:42 PM
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I only have 250 hours on this bulb from Projectorzone, but it did come in a sealed box and it was from Mitsubishi. I guess there is a hellava markup if Projectorzone sells it for $50 less than Mit and they still make a profit.

...finally retired and spending time in my HT!!!

My equipment consists of: Epson 9500 UB Projector(Avical ISFd); 110" 16x9 JKP Affinity Screen; Panny BD30 Player, Tosh HDA1 Player; Definitive Speakers (Center, Towers, Rear); Onkyo 608 A/V Receiver; Nevo Q50 Remote; TWC DVR-HD Cable Box; 5 Bello chairs.
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post #3635 of 3638 Old 04-08-2014, 11:02 AM
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I have my stuff finally setup (150" screen and 8500ub throwing from about 18ft). I have notice quite a bit of light pollution coming off the screen and reflecting onto the ceiling and side walls.
What are you guys doing to cut this out? My walls are beige and I can't paint bc its my main living area and it would look odd. I have thought about using a black table cloth to hang on the side of the walls and ceiling.
I'm not looking to spend a big chunk of change to get the finest materials, just something that will do the job. The tablecloth would hang on small hooks so I can take them up and down when I need to.

Any suggestions? I have found black tablecloths on Amazon 70" x 156" for 13.99... Is there anything else out there with similar costs and benefits?
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post #3636 of 3638 Old 03-06-2015, 09:08 AM
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Any techs out there with some advice?

I cracked into my Epson 8500UB all the way down to the light engine. I fixed the tinted bar at the top by pushing the one lens past the iris down until it clicked back into place, but I have two other problems I'm trying to solve.

1) I have a pink tint to the right and a greenish tint to the left. It stands out on an all-white window and affects skin tones on regular viewing material. I went in and cleaned the entire light path (using canned air, white coin inspection gloves and a microfiber cloth) but that doesn't seem to have done the trick. Any ideas which optic could be causing this? I'm not afraid to crack it back open if I can figure out the problem. If it's one of the polarizers fading, is that something you can even buy or can it just be cleaned in some way?

2) I don't see it on viewing material, but when I put up a red or green window pattern, you can see visible faded black spots. Could that be dust on the red and green LCD panel itself? I cleaned every mirror and lens in the light path, but all I did for the LCD panels was blow them off with canned air because I didn't want to remove the lenses directly in front of them.

Any ideas would be appreciated. Pic of the discoloration attached, but I couldn't get a clear pic of the faded looking spots on red and green window patterns.
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post #3637 of 3638 Old 04-15-2015, 01:25 PM
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Quote:
Originally Posted by Jeremy Anderson View Post
I cracked into my Epson 8500UB all the way down to the light engine. I fixed the tinted bar at the top by pushing the one lens past the iris down until it clicked back into place, but I have two other problems I'm trying to solve.

1) I have a pink tint to the right and a greenish tint to the left. It stands out on an all-white window and affects skin tones on regular viewing material. I went in and cleaned the entire light path (using canned air, white coin inspection gloves and a microfiber cloth) but that doesn't seem to have done the trick. Any ideas which optic could be causing this? I'm not afraid to crack it back open if I can figure out the problem. If it's one of the polarizers fading, is that something you can even buy or can it just be cleaned in some way?

2) I don't see it on viewing material, but when I put up a red or green window pattern, you can see visible faded black spots. Could that be dust on the red and green LCD panel itself? I cleaned every mirror and lens in the light path, but all I did for the LCD panels was blow them off with canned air because I didn't want to remove the lenses directly in front of them.

Any ideas would be appreciated. Pic of the discoloration attached, but I couldn't get a clear pic of the faded looking spots on red and green window patterns.

i have exactly the same prob with my tw4400...i have cleaned the lens and polariser but it still there, it affects the skin tones on the green part and pink part of the screen..

is it a burned polariser, or burned lcdpanel, or convergence issue...

can i find polariser or lcd panel if the prob is them, cause the full optical prism will be cost about a price of a new pj...

thanks
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post #3638 of 3638 Unread Today, 05:12 PM
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The color tint (usually green in some areas, magenta in other areas) is likely an alignment and/or polarization artifact that cannot be fixed. Because the color tint is not uniform over the image area, any attempt to fix it is just going to result in moving the tints around but never getting rid of them. If the tint is caused by tolerance variations in the polarization required for each of the 3 imagers, the variable tint means the polarizer alignment is not uniform across the entire field so you can't fix that without new imagers and those new imagers would have to have perfectly matched polarization (difficult at best).


If the projector has a fine imager alignment feature with grid lines on a black background (Epson 50xx and 60xx projectors do but not sure about other models), that MIGHT fix some cases, but I've also see cases where there is visible misalignment of 1 or 2 imagers (color fringing visible in images) and fixing that misalignment using the alignment grid fixes the color fringing, but introduces new green and/or magenta discolorations in white fields... to get rid of the discoloration, you have to remove all the corrections you did and live with the visible misalignment of the imagers. So there are no guaranteed fixes when you get magenta/green tinted areas in white fields.


If your projector has an air filter that hasn't been cleaned in a long time, or ever, cleaning the air filter may cool the optical engine enough to reduce or eliminate non-uniformities. Some Epson projectors do have air filters (again 50xx and 60xx series), but not sure if they all have filters.


You only get this field non-uniformity in projectors with 3-imagers, and then, usually only at prices under $4500 or so (MSRP).

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