Question about Hitachi 53SWX12B 53" Rear Projection Television

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Picture has gotten darker

The blacks are too dark, no detail in the blacks. This started about 2 weeks ago. Tried adjusting using brightness, contrast etc.

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Re: Picture has gotten darker

Use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.

Posted on Dec 05, 2007

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My sharp 32c540 picture is dark since i bought it brand new 6 years ago.

You may just have to make a different kind of adjustment.

This is what is called a direct view or crt type TV.

Inside on the main board (see attached photo) is the "flyback" transformer.

Note the two little controls embedded in it----top one is focus--leave it alone.

Lower one is SCREEN and a very slight upwards or right adjustment will bring the overall brightness up.

You want to adjust it just till with brightness on set all the way up you have a normal picture.

Too much and you get excessive brightness and trace lines and or further too much shuts set off.

Some sets have two holes in back of cabinet and small tool can get in and adjust the LOWER or screen control and others the back has to be removed.

Lay set face down on padded surface, remove back screws and set upright---do not touch anything inside with set on when you make the adjustment--control is plastic and a plastic tool a good idea--I have used regular screwdriver but know what not to do.

Let me know if you have questions 98% chance just need the Master Screen bumped up a little bit.

Mar 11, 2012 | Projection Televisions

2 Answers

In the past few day i've noticed the picture is

BRIGHTNESS. Your owner's manual probably says that the brightness setting is used to control "brightness" or "picture intensity" or something other fuzzy non-descript term. The truth is that brightness is used to set the BLACK level in the picture.
On most TVs and projectors in use today, brightness is set too high. That's because people think "a bright picture is good, so I will set it as bright as I can get." Well, that's nice in theory, but entirely wrong in practice. Setting the brightness level too high makes a black tuxedo look gray rather than black. It muddies up the shadow areas, and reduces the overall snap and crispness that the picture would have if properly calibrated.
To find the right setting for brightness, go to the image in your movie that has textured blacks and hopefully some shadow/low light areas in which there is detail. Then freeze on that frame. As you move the brightness control down, the intensity of the blacks will increase, and shadows will get darker. As you move the control all the way to zero, you will (hopefully) see that the low light shadow areas will also go to solid black and lose their detail.
The optimum setting for brightness is achieved at just the point where true black objects appear as black as your system will make them while retaining as much visible detail in the shadow areas. Above this point the blacks appear to go grayer. Below this point you lose detail in the shadows. On many video systems, this optimum point is toward the lower end of the brightness scale. But find the point that looks correct to you regardless of where it is on the scale.
CONTRAST. The contrast control is similarly confusing. It is also often set too high on the theory that contrast is good, and therefore we might as well get the most we can out of our set by turning it all the way up. In fact, the contrast setting is used to control the intensity of the brightest highlights in the picture, so it is (oddly enough) the opposite of brightness control.
First, find your test scene in which you find textured whites in bright light, and freeze that frame. You are looking for the brightest elements in the picture in which you want to retain visible detail.
Let's assume you have a whitewashed fence in sunlight. If you start with the contrast set low, the fence will appear light gray rather than white. As you move the contrast control up, the fence will get whiter. Eventually details in the texture of the fence will begin to disappear.
If you continue to push contrast past the optimum point, the wood-grain texture of the fence will go solid white and all visible detail will be obliterated. Push contrast up even a little further, and our fenceposts might actually appear to expand very slightly due to a glow around the edges. This phenomenon, called "blooming" is a definite sign that your contrast setting is overcooking the image (and maybe your picture tube as well—don't ever leave the contrast control set this high!!!)
Find the point at which whites look white while retaining as much texture detail as possible. This is your optimum contrast setting. On most video systems, this setting is toward the higher end of the scale, but it can be anywhere. Find the point that looks correct to you. (By the way, unlike TV's, digital projectors will not bloom)
Now…note the following: brightness and contrast can be to some degree interactive. Your new contrast setting may have affected your brightness. So return to the brightness scene and verify that your blacks are still black, and you still have maximum detail in the shadows. Adjust it if necessary, then return and adjust the contrast setting once again if necessary. (You can see that this is much easier if the black and white elements you are testing all appear in the same image!)
COLOR. The color control on your set determines the level of color intensity in the image. One of the most common errors people make in calibrating their video systems is overdriving the color. That's what makes Larry King look reddish-orange on the TV at the gym. Overdriving color is common because once again, people naturally think, "I want to get as much color as I can out of this color TV, so I will crank it up some to make sure I get the most out of it!" No. Bad mistake.
If you move the color setting down to zero you will notice that your picture will turn into a black and white image. The optimum setting for color is achieved by increasing the setting just to the point where colors look natural and not a bit more! Flesh tones should look natural and without any hint of an unnatural glow. Grass should look naturally green rather than screaming spray-paint green.
When adjusting color, make sure that your test image has relatively unsaturated colors. Flesh tones or natural landscapes are ideal. It is impossible to set color properly if you are using a brilliant red Ferrari as your test subject.
On the large majority of video systems, the optimum setting for color is somewhere near the middle of the scale. However, trust your eyes for the optimum setting and think "what looks like the most natural, accurate reproduction of reality?" Any overdriving of color will make the image look artificial.
TINT or HUE. The tint control adjusts color balance rather than color intensity. It is an easy control to set properly, but for some reason many people don't get it right. When flesh tones look either too green or too magenta, a phenomenon you see with amazing frequency, it is because the tint control is not set properly.
Find a human face and freeze-frame it. (In choosing your test subject, note that lighter skin tones will show errors in tint more readily than darker skin tones). As you move the tint control to one end of the spectrum, the face turns green; as you move it to the other extreme, the face turns magenta (red+blue).
The correct setting for tint is the point near the middle of the scale at which you can detect no hint of either green or magenta. It is the most neutral point between the two extremes. The flesh tone looks the most natural at this point.
SHARPNESS or DETAIL. The final setting is sharpness or detail. Now, pray tell, who in their right mind wouldn't want the sharpest, most detailed picture they could get? And since there is a control that lets you turn it up, why not turn it up? That's what many folks do, and of course it's exactly the wrong thing to do.
The sharpness control adds processed information to the picture that is NOT part of the original video signal. It adds artificially highlighted edges, and makes the picture look less natural than it otherwise would. This is most evident along the continuous edge of a dark object against a middle-toned background. When sharpness is overdriven the dark edge will be outlined by a white ringing effect that increases contrast just along the edge of your dark object. That edge "highlighting" effect is created by the sharpness control. It is an artificial manipulation of the image. It wasn't in the original scene, and it shouldn't be on your screen either.
On most televisions, the optimum setting for sharpness is zero. On many digital projectors, the optimum setting is either in the low or middle part of the scale. Picture tube televisions and digital projectors behave differently in this regard; on a digital projector it is often possible to fuzz the image by setting sharpness too low.
Now look at your picture with the sharpness turned down or off depending on what works best on your system. You will see a smoother, more natural image. It might take some getting used to, since you may be accustomed to viewing video with all the artificial edge enhancements that create the illusion of added sharpness.
However, when the interference and noise from the artificial sharpness enhancer is removed, you are seeing the most genuine reproduction of the video signal that your projector or TV is capable of. And if you view it for a while, you will gain an appreciation for just how smooth, natural, and satisfying the picture can really look.

Dec 12, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

Picture is going dark to bright and making a clicking noise

Hi, sounds like you`ll need that tech again, your description sounds like a bad color wheel, if you let it continue and it shatters it can & probably will destroy your light tunnell, sorry for the bad news but now you know not to keep running the set, this is a very common problem with dlp`s and it`s exactly why we tell our customers not to purchase dlp`s, gl, video-tek

May 29, 2009 | Projection Televisions

1 Answer

Picture gradually going dark

turn the screen up a little on the flyback..

Dec 16, 2008 | Toshiba 50A61 50" Rear Projection...

1 Answer

Mitsubishi WD-52631 shadows and blurs in dark lit movies

If you are getting the same problem with both TV monitors it could then be assumed it's an input problem to the TV monitor. If you are using a digital output from your receiver it could be the cabling. If you are using an analog output from your receiver it is probably coming from the receiver.
Digital video processing does have issues with darker scenes.
Can you try another video source seperate from the receiver like a DVD or better yet an analog VHS, if you still have one. Good luck and let me know.

Sep 17, 2008 | Samsung HL-R6168W 61" HDTV

1 Answer

Dark picture

you know it sounds like the same problem i had....
look this is something you can try.... "turn the tv off and unplugg it!!!"'ll need to take out the lower front part of the tv......(where the speakers are to be exact) on each lower end you will find 2 screws..Be careful it will open to the side and there are many wires, i suggest you mark them to know where to put them back...then right in the middle there will be a black cover with about 5 screws..take them out....and look at the very bottom you'll see a thing with 6 pegs....the top ones are for the screen "DO NOT TOUCH THEM"...the ones on the bottom are for the adjust them...the left one it's for blue, the middle one it's for green and the last one it's for red...

I had the same problem after i moved....and after i re adjust that the tv looks super...
i hope that helps..:P

Sep 17, 2008 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Dark picture

sony had a recall on this set see if this is one of yours

Oct 01, 2007 | Sony KP-57HW40 57" Rear Projection...

1 Answer

No contrast

first turn your color all way off or down.try turning your contrast way down as far as it will go you should see a darker picture. now bring up the brightness to a point half way. bring the contrast up to see grays and whites and blacks...adjust brightness more if need be. now you should see a nice black and white picture. no bring your color up last ...not saturate but to your liking. if you stilll got problems i bet your video out transistor is shorted....meaning shop work.

Aug 31, 2007 | Panasonic PT-51HX41 51" Rear Projection...

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