Question about Samsung LN40C530 TV

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Screen darkens and lightens intermittently while watching cable tv

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Posted on Jan 02, 2017

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SOURCE: The Fn and up down light arrows do not work

Look in device manager and see if you are missing any drivers, if you see and yellow exclamation marks then update driver and this should correct the problem. If there is no driver problems then you will have to replace the keyboard.

Posted on Feb 25, 2011

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I have a Ti-89 and my screen is really dark all of a sudden. I cant figure out how to lighten it! I can read it, but only if i turn it just right and look at it up close. How can i lighten it?


Lighten the screen by holding down the green diamond key and then holding down the - key. If you go too far, use the + key instead of the - to darken the screen.

Sep 17, 2010 | Texas Instruments Office Equipment &...

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To whom it may concern, The screen is very dark. How can I fix it? Also, how can I change the brightness? thank you for your time!


To adjust the screen contrast (to lighten screen or to darken it)
  1. Press the [2nd] key and RELEASE it.
  2. Press and HOLD the UP Arrow to darken screen, or
  3. Press and HOLD the DOWN Arrow to lighten it.
Keep pressing the UP or Down arrows (whichever you need to press) until the screen contrast is adequate.

In your case, the screen is too dark, so you must press the DOWN arrow to lighten it.

Aug 12, 2010 | Texas Instruments TI-83 Plus Calculator

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When powered on, the LCD screen is dark blue.


Press and hold the Control key marked with a green diamond, then press the minus key (above the + ) to lighten the screen. If you lighten the screen contrast too much you can darken it as follows:
To darken the screen press and hold the diamond key and press the + key.

May 29, 2010 | Texas Instruments TI-92 Plus Calculator

1 Answer

The screen is black when I turn it on. I've replaced the batteries and no change. I try to change the contrast and nothing happens. It is a couple years old, but I should still work.


Hi,
Check that the terminals in the battery compartment are clean and shiny. Remove any powder left after battery leakage. Insert fresh batteries in calculator. Make sure you respect the polarity diagram. +-+- (Many malfunctions come from incorrectly placed batteries).

To adjust the screen: Darken or lighten display

To darken screen
Press [2nd] key and release it.
Press and hold [UpArrow] until screen is dark enough.

To lighten screen
Press [2nd] key and release it.
Press and hold [DownArrow] until screen is light enough.

Hope it helps.


Dec 03, 2009 | Texas Instruments TI-86 Calculator

1 Answer

Won't power on even though i've installed new batteries. There is no corrosion on the battery terminals.


Hi,
Check that the terminals in the battery compartment are clean and shiny. Remove any powder left after battery leakage. Insert fresh batteries in calculator. Make sure you respect the polarity diagram. +-+- (Many malfunctions come from incorrectly placed batteries).

After replacing batteries, calculator is restored to defaults and screen display may be too loght or too dark

To adjust the screen: Darken or lighten display

To darken screen
Press [2nd] key and release it.
Press and hold [UpArrow] until screen is dark enough.

To lighten screen
Press [2nd] key and release it.
Press and hold [DownArrow] until screen is light enough.

Hope it helps.

Nov 14, 2009 | Texas Instruments TI-86 Calculator

1 Answer

When i try to graph something on my TI-83 Plus, the screen fades to pitch black and then it says INVALID DIM


Hello,
Reset the RAM to clear old settings that interfer with your new problem
[2nd][MEM][7:Reset][1:All Ram][2:Reset][ENTER].
Press [CLEAR] to clear the screen.

After a memory reset you may have to adjust screen contrast.

To increase contrast (darken the screen)

1. Press [2nd] key and release it.
2. Press [UpArrow] key and release it.
3. Repeat sequence until screen darkens enough.

To lighten the screen

1. Press [2nd] key and release it.
2. Press [DownArrow] key and release it.
3. Repeat sequence until screen lightens enough.

Hope it helps.

Oct 07, 2009 | Texas Instruments TI-83 Plus Calculator

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Screen too dark


Try holding CTRL down and pressing F6 to lighten and F5 to darken screen...

Sep 11, 2009 | Acer AL2016WBbd Monitor

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Screen darkness


Just fixed mine.Remove the back of the TV on my model there in a small pwer supply turn the bottom of the two pots this will darken or lighten the screen. Fine tune with the settings on the remote

Jul 04, 2008 | Televison & Video

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