Question about Hitachi 50DX01B 50" Rear Projection Television

1 Answer

Screen going Black

I have the contrast and the brightness controls turned all the way to 100%, doesn't help. The set was new in 2000.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 232 Answers
Re: Screen going Black

Hi, does it go dark immediately at turn on or after it has warmed up? BMW Rider

Posted on Dec 11, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Screen dim, black has green in it, contrast and brightness = shin

Since you have replaced the Color Wheel, it sounds like you have not adjusted the Index Delay in the service menu. First reset all of the picture settings you have adjusted back to original factory settings. Then on your Samsung TV Remote and with the TV OFF, Press Mute,Power,123. This will turn on the set and put you in the Service menu. Look for the top setting and select or scroll to the OPTION setting and select and look for INDEX DELAY and select that. Once you have the Index Delay selected use the right and left buttons on the remote to adjust for a picture the has no abnormal coloring and while looking at a program adjust for when the blacks look black with no abnormal coloring. Once that is done, turn off the set then turn the set back on. Now the picture should look normal.

Apr 03, 2010 | Samsung Projection Televisions

3 Answers


it is best to shut the color level to the lowest setting then try t balance the screens to achieve the best black and white picture. then turn up your color level. Your brightness level should also be set to 50 % then when you adjust for the best B&W picture. You will have better color and brightness when you reset your color and brightness levels.

I am further looking into ur problem..


Feb 07, 2008 | Hitachi 57F500 57" Rear Projection...

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

I cant get the color right. its to red??? any help? i did notice with the back cover off, there are 6 adjustment screws

yes! those are the screen and focus adjustments. 3 for screen, 3 for focus. try this. go in menu....turn down color, brightness, contrast all they way down. you should then have no picture, but in your case a little red. then go to back of tv and turn those 3 screen adjustments all the way down. slowly turn the screens back up until you get barely a picture. because remember, your brightness and contrast is all the way down. the picture should be dim but seeable and with red, green, blue adjustments, make it a black and white picture. when balanced..... turn up color , brightness, contrast in menu. enjoy!

Nov 14, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

What are the best video settings for a Hitachi (46GX01B), 46 inch, rear Projection TV (from 2001) in regard to: contrast,brightness, color, tint, sharpness, etc. The setting level goes from 1% to 100%....

The best setting are the ones you prefer the most.In general most sets are optimized for 50% on color and tint and usually 70% or more for bright and contrast.

Nov 08, 2009 | Hitachi 46GX01B 46" Rear Projection...

3 Answers

Night time scenes have become almost impossible to see.

I had the same problem. Figured the 8 yr. old set was on it's last legs. Read everything I could find and nothing helped. But, luckly I did the following and it's like new again! try the following: Press MENU, selectSETUP, select DPO, set it OFF. DPO automatically controls Contrast, BLACK LEVEL (Brightness) and Color. Now press Menu, select PICTURE, then select BLACK LEVEL and run it out to plus 25. your picture should be brighter. Then adust Contrast,Color and Black level to your liking.
Good luck!

Jul 13, 2008 | Pioneer SD-532HD5 53" Rear Projection...

1 Answer

Red , Green And Blue.

Heres the best way to set a phillips screen controls. Go into the picture controls and set picture or contrast to roughly 75%, then set brightness to 50% and then set the color level completely off. Then adjust the screen with the 3 color controls untill you recieve the best black and white picture as possible. If you are unable to achieve a good black and white picture change the coolant in the green and blue tubes. But if you can get a good black and white picture stop there then turn your color level back up and the picture should be correct. Let me know if you need further assistance.

May 22, 2008 | Projection Televisions

2 Answers

Green shadows surrounding bright whites

finally a consumer that gives us plenty of info :)
sounds like an overdriven green tube, the only thing you can try is to find the G2/Focus block assembly, either behind front speaker grill or remove back of set and look for a black box approximately 5"X5" , this box will have 6 philips type adjustment screws(plastic) 3 are for focus, do NOT adjust these,
the other 3 are marked "screen" the center screen adjustment screw is for green, turn it VERY slowly counterclockwise while the set is running and pray that your problem dis-appears, be advised that this is a HIGH VOLTAGE device so one hand in your back pocket the other hand turns the screwdriver, if the problem does not go away you have a poor green tube, good luck, sorry I can`t give you the exact location of the G2/Focus block, manufacturers move them to different places every year.

Nov 29, 2007 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Mitsubishi VS-6041- picture brightness not very bright

Hi Dawn,
The TV does have a screen control on each of the picture tubes ( there are 3 ) although I do suggest you have a qualified technician make the necessary adjustments as an improper adjustment can cause damage to the set. Should you deside to make these adjustments yourself, you'll need to remove the back ( or front in some sets) ( PRE-CAUTION, UNPLUG THE SET FROM THE WALL BEFORE PREFORMING ANY ADJUSTMENTS INSIDE THE SET ) The screen adjustments are located either on the bottom of each tube or in a group component located where the main High Voltage Wire ( large red wire from the black transformer on the deflection board ) is connected to. Look for a turn pot ( screw type adjustment ) that is marked SCREEN. When you locate it ( whether it be on each tube or in the group component ) turn it up only slightly and not to much, as excessive gain ( turning it up to much ) may cause the TV to shut down. When you have the proper brightness ( when it looks good to you ) close the set up and enjoy the renewed picture. Good luck and I do hope this has helped in some way
NC Electronics
Mills, Wyoming

Nov 18, 2007 | Mitsubishi VS-6041 60" Rear Projection...

1 Answer

Ccreen quality

There is no yellow tube my freind, only a red, blue, and a green one. If its too bright, have you tried to turn down the black level yet or brightmess, and also the contrast. On these sets you don't need to have the brightness up way high, as the contrast does this. If, when you turn down the brightness, and the picture looks dull, you may need to clean off the mirrors, and or the lens for the picture tubes. If that does not help, there could be a problem in the screen drive circuit or the high voltage block. Good Luck Ps Please do not forget to rate this thread.

Dec 08, 2006 | RCA P52926 52" Rear Projection Television

Not finding what you are looking for?
Hitachi 50DX01B 50" Rear Projection Television Logo

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Hitachi Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides