Question about Proscan PS50700 50" Rear Projection Television

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Screen goes dark

TV cycles from the correct brightness to dark,almost unable to see picture on the screen.  Does this non-stop.

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  • jlancaste377 Feb 10, 2009

    Background Dark and won't adjust.

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Posted on Nov 16, 2008

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1 Answer

My tv screen is to dark how do I lighten the picture


If your TV has already fully adjusted in brightness set up?, and there will be no good picture results?...try to adjust the "SCREEN-Screw" at the flyback slowly. If the picture still dark'?. the picture tube has need to rejuvenate.

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Dark picture means you have low brightness on the screen. Please increase the brightness. Also try increasing the back light intensity.

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that would be a failing tcon board on the back of the screen.you would need to replace this part but they are available on ebay the part number is on the tcon board. match the numbers a version number to get the matching board for the screen. tcon board is the board were the main wire cluster goes to the screen board this is the tcon board.

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The picture frame still scrolls pictures but the pictures are very dark and unable to be seen well. Is the frame ruined?


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Some channels on my tv are dark and tinted orange, I used the menu button to display the menue and scrolled down to picture but I did not know how to select picture.


Hello
Adjust colour control to zero, and check for a pure black/white picture. Adjust contrast and brightness control to minimum and check whether the picture goes completly off or a slight picture prevails. If the picture goes out when you turn down brightness control to 1/3 position, that is about 20 points, your TVs screen voltage is very low, and it can be adjustable. If the picture does not go out and more brightness prevails, screen voltage is high. If the screen voltage is high, there will be some fine lines across the screen at about an inch apart; on the whole screen from top to bottom.
Screen voltage adjustment is critical for the clarity of the picture. If it is low, no proper colour will be dispayed. If it is high, it is harmful to both picture tube and your eyes.
Never try to adjust it without proper knowledge about it. The screen control can be located alongwith the LOT [Line Output Transformer], of your tv. There will have two adjustable controls there, one is for Focus, and the other is for Screen. Both are interactive, that is adjusting one will effect an other.

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Our Mitsubishi WD 52525 goes to blue screen and shuts off.


It sounds like you TV is overheating and the video is suffering and the lamp is overheating as well. Also, if your TV is over 2-3 years old, the mirrors (behind and below the big front screen) desperately need to be cleaned. Clean all filters and fans as well. (Look on side and behind the unit). Is the TV in a "hot" environment and/or dirty environment? DLP TV's are NOT sealed units. They need to be cleaned every few years to work well to have a good, clear, bright picture.

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PS2 Picture Problem


Hi MG86,

Most PS2 games are dark and auto brightness controls will casue your LCD tv to brighten up automatically in response the dark video coming from PS2 games. I suggest you get into the menu settings of your TV and find a setting that will shut off the auto picture controls.

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1 Answer

Darks too dark


try to open your tv and you can find the flyback ,in flyback you can see the screen and focus to adjust.use and try to rotate the screen,it control the brightness of your unit

Oct 15, 2007 | Toshiba 32AF43 32" TV

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Brightness of picture


If you feel good about opening your set then you can try this: Look for the flyback (high voltage) transformer, with the thick red wire which goes to the top of the picture tube. There are 2 controls on the flyback transformer, focus (top) and screen (bottom)Turn the brightness and contrast all the way down and then increase the screen control until you see retrace lines, and then back it down until those lines just vanish. Return the brightness and contrast to normal and adjust the focus control, if necessary, for a nice sharp picture. Let me know if that brings your brightness back.

Aug 21, 2007 | JVC AV-27D104 27" TV

1 Answer

Screen goes dark


I thught I answered this one but if you disconnet the sensor it should brighten up the picture If it dosent then its part of the brightness curcuit and must be replace. As I remeber thewre are severall models that you could simply disconnect. Or there should be an auto brightness feature in the main menu picture ajustment to simply disable or shut it off. Good luck

Apr 22, 2006 | Mitsubishi The Big Easy TV

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