Question about Panasonic PT-51G44 51" Rear Projection Television

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PICTURE DARK

BRIGHTNESS TURNED ALL THE WAY UP,STILL DARK IS THERE A CONTROL OR SETTING ON CHASSIS THAT NEEDS ADJUSTMENT ??? THANKS GHEERK

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Re: PICTURE DARK

Where is the chip located? Where is the disc capacitor? I have no service manual is there picture of parts somewhere to locate these?

Posted on Apr 05, 2006

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Re: PICTURE DARK

I had the same problem soI decided to go ask at our local tv shop Panasonic warranty place and he was nice enough to tell me the problem . So for everyone reading .. these had a defect with some of the disc capacitors they used on the CRT board it as 2 on there . The second problem is with the ``YC`` chip . panasonic sets have many unusuall malfunctions caused by this chip such as a black & white picture or brightness problems . unfortunatly my set has a bad chip . There we all learned something today . he invites you to contact a Panasonic ``rep`` he will tell you the same thing .

Posted on Nov 16, 2005

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Dark picture


Please check your TV's Picture mode setting. Use the VIVID picture mode to achieve the brightness video.

Mar 11, 2014 | Panasonic PT-50LC14 50" Rear Projection...

1 Answer

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

Changed the projection lamp and picture is very dark


If brightness setting is not turned down then you need a new light engine. Contact Sony. They have had trouble with them and have replaced some at no cost especially if picture a has blue tint to any part of screen.

Nov 22, 2009 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

Serviceman mode for sub brightness (D02) adjustment PT-53WX42F The default setting is too dark. Need to increase but I cannot find where to change the Sub Brightness adjustment setting.


Remote Method

  • In SET-UP icon, set antenna to CABLE
  • In TIMER icon, set sleep timer to 30
  • Exit menus and tune to channel 124
  • Adjust volume to 0
  • Press volume down (VD) on control panel and red 'CHK' will appear in the upper left corner
  • To toggle between Serviceman and Aging Modes press Action and VD on the control panel

Jun 16, 2009 | Panasonic Projection Televisions

1 Answer

Sony Grand WEGA KDF-50WE655 50 in


If it is dark because of an adjustment the "picture" adjustment would make a difference.
The most likely cause of a dark picture on this type of set would be the lamp getting near the end of it's life. This set should use part number, A-1606-034-B and is something you can probably change yourself, check your owners manual, it shows how. Follow the instructions and remember to have the power chord unplugged while you are changing lamp and to put the lamp door back on the set before you connect the power chord again.

Mar 13, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

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
Ed
NC Electronics
Mills, Wyoming

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

2 Answers

Brightness


Yes there is, you can very carefully take off the back of front speaker grill and the wood cover behind this. There you will see several controls I think six total, three on the top and three right below it, you want to turn up whats called the three screen controls for the red blue and green but you will need a B & W picture on the TV so you can balance the greay scale. if you do not balance the grey scale the TV will not look good. if you do not think you can do this adjustment properly, please play it safe and call in a tech to do these adjustment for you. Good Luck

Mar 23, 2007 | Panasonic PT-51SX60 51" Rear Projection...

1 Answer

Dark picture


I think you have a regulation problem and all the voltage supplies are lower than what they should be,the fact that the picture gets distorted is one thing it lead me to believe that is the problem.This can be caused by a loose conection in the power supply ,I would suggest not to use it until it gets repaired or it might become worst and more expensive.Be careful if you remove the back and try to repair it yourself.

Oct 02, 2006 | Panasonic PT-61G54 61" Rear Projection...

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