HELP!! Samsung hl-s5087w dlp seems to arch the picture on the left and right sides? - AVS Forum
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post #1 of 16 Old 01-06-2007, 04:04 PM - Thread Starter
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I have my new Samsung 50" 1080p dlp tv all hooked up and I noticed that the display actually seems to arc the picture UP on the right hand side about 1/4" or so. When viewing tv at full screen you really can't tell. But when watching dvd's that put the black bars at the top and bottom of the picture you can tell. And also since I have my computer hooked up to the tv via vga cable, there is about a 1" black border that goes around all sides of the picture on the tv.

so if you are playing a dvd and have black bars at the top and bottom of the screen. On the far left hand side of the picture, the top black bar might be 3" high, then on the far right hand side at the top the black bar is about 2.5" high.
Same goes for the bottom black bar, the far bottom left bar is about 3" high, and the right bottom black bar is about 3.5" high. So it seems the picture on the right hand side is sort of curved up about 1/4-1/2". I can also notice that in the middle of the display, the top and bottom black bars are actually a bit thicker then the left and right edges. So it seems there is also a slight arch in the black bars.

Is all of this normal for a dlp? or should I return the tv and get another one?

easiest way to tell if yours does the same thing is to put a dvd movie on which has black bars at the top and bottom, then take a ruler and measure the height of the black bar at the top left, top middle, and top right of the picture. Then do the same thing for the bottom black bar. If you look at all the measurements, I would think they should all be equal for the top and bottom. But in the case of mine, my top black bar height measurements would go like this: 3" top left, 2.9" top middle, 2.7" top right. Then for the bottom: 3" bottom left, 2.9" bottom middle, 3.3" bottom right.

so you can see the image is actually sort of curved up on the right hand side.

can anybody tell me what they thing is going on here..?
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post #2 of 16 Old 01-06-2007, 05:23 PM
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Originally Posted by squale View Post

....Is all of this normal for a dlp? or should I return the tv and get another one.?

All RPTV's I have seen exhibit some geometric distortion such as you describe in some form and degree.
This is due to imperfect projection optics, partially because of the limited space to position all of the elements. It is not an issue of the chip itself.

Movie theaters exhibit geometric distorions as well, but usually less severe.


I would not bother to return the set, if this is your only complaint.

If this really bothers you then you are a good candidate for a flat panel. Either LCD or Plasma.

"Information is only as good as the accuracy of the source"
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post #3 of 16 Old 01-06-2007, 05:47 PM
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Originally Posted by squale View Post

Is all of this normal for a dlp? or should I return the tv and get another one?

It's normal (1/4 inch or less) for all RPTV sets. It's caused by the short distance from the screen to the projector. It's the cost of having sets get thinner and thinner.

What you are seeing using VGA is a system choice to make sure that you can see all of a Windows desk top so that's normal too.
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post #4 of 16 Old 01-06-2007, 09:32 PM - Thread Starter
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well I can understand if the geometric distortion was equal on both sides, but like I said the right side of the display is sort of bent upwards about 1/4" and the left side is pretty much straight on top and bottom. Why would only one side be bent up like this?
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post #5 of 16 Old 01-06-2007, 10:27 PM
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Originally Posted by squale View Post

Why would only one side be bent up like this?

Your individual light engine is mounted in a way to cause that effect. A plastic case will vary enough to produce different effects. If you are not happy have your set exchanged by the dealer.
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post #6 of 16 Old 01-07-2007, 12:32 AM
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I have the same exact thing on my Samsung HL-S4676S, that i just purchased about a week ago. Only my slight bend is on the left top corner while viewing DVDs with bars. No one else sees this but me, so i guess its not even worth it to return. I have no other complaints with this TV. There's no hour glass shape while viewing 4:3 either. So in your opinions, is it worth an exchange? There's no fix for these sets in the service menu, correct? Not to mention this is a new slim DLP....i should probably be grateful thats the only "bug". *shrug*
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post #7 of 16 Old 01-07-2007, 10:16 AM
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Originally Posted by TIME2PLAYDAGAME View Post

Not to mention this is a new slim DLP....

The new slim design (~10" deep) is just being introduced at CES 2007. Yours is the old slim design.
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post #8 of 16 Old 01-07-2007, 10:47 AM - Thread Starter
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is it common to get an hour glass effect on 4:3 viewing?

do ALL these dlps have some sort of orientation distortion? so if I exchange I have good chances of getting another one with some type of distortion, maybe better, maybe worse?
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post #9 of 16 Old 01-07-2007, 10:56 AM
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Quote:
Originally Posted by squale View Post

is it common to get an hour glass effect on 4:3 viewing?

Yes, but the amount can vary from very noticeable to hard to detect.

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do ALL these dlps have some sort of orientation distortion?

All RPTV sets have the same problem. If your TV is a DLP, LCD or LCoS(SXRD) RPTV, and not a front projector, you will have the same problem to some extent. See above.


Quote:


so if I exchange I have good chances of getting another one with some type of distortion, maybe better, maybe worse?

Yes. Exchanging will probably work if you have a bad case, probably won't work if you are being picky.

On a 4:3 image, if the sides bow in 1/4" or less you have little chance of improving on the TV that you already have. If you want to trade this problem for a new set of problems, plasma and LCD flat panels are perfect in this regard because their image isn't projected.
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post #10 of 16 Old 01-07-2007, 08:36 PM
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You know, I wish you guys would have replied to the threads I started regarding the slight geometric issue in my JVC. Would have saved me the hassle of exchanging mine only to have the new one have the same issue plus a smudge on the screen or optical system.
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post #11 of 16 Old 01-08-2007, 08:27 PM
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Quote:
Originally Posted by htwaits View Post

The new slim design (~10" deep) is just being introduced at CES 2007. Yours is the old slim design.

A 3 month old TV is considered "old"? Ehh i guess with all the technology that changes each day. *shrug*
Seriously though, can any bowing be fixed on DLP sets through the service menu? Could a TV guy fix it?
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post #12 of 16 Old 01-08-2007, 11:06 PM
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Quote:
Originally Posted by TIME2PLAYDAGAME View Post

Seriously though, can any bowing be fixed on DLP sets through the service menu?

No, but it has nothing to do with DLP. All RPTV sets with short distances between the light engine and the screen have the same problem.

Quote:


Could a TV guy fix it?

It's possible to adjust the location of the light engine and make it better -- or worse.

The light engine mounts are not designed for fine tuning.
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post #13 of 16 Old 01-09-2007, 07:14 AM - Thread Starter
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well I have about 1/4" bowing inward on the sides in 4:3 viewing. And in regular widescreen viewing, the top right black bar is about 1/4" less in height then the top left black bar.

also, I notice if I turn the tv off, then turn it back on within a minute, the tv makes some high pitched squeel noises before the screen shows up.. very weird!
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post #14 of 16 Old 01-09-2007, 07:20 AM
 
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All RPTV's do not do this. My Panny DLP does not, my SXRD did not and my HLS 6187 does not. The Samsung does have a minor hour glass look on 4:3 (sometimes).

Return for another if you can.
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post #15 of 16 Old 01-09-2007, 07:28 AM - Thread Starter
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yes I know they all don't do this cause my father has the 5678 and his is fine.
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post #16 of 16 Old 01-09-2007, 07:58 AM
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My gut feeling is that you are being unreasonably picky about this, and that nothing you do from this point on short of returning your TV and going with a flat-panel display will make you happy. If you want a zero-overscan distortion-free screen that will work great with a computer then probably LCD is your best bet. However you will enjoy the motion blurring and other LCD-related problems that you aren't having right now.
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