Question about AOC CT720G 17" CRT Monitor

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I can't fix the image setup of my monitor and the image distortion of it and also the brightness and contrast.. how can i fix this? Thanks

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Dear User...

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.

To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.) For more information about calibrating your display color in Windows, see Calibrate your display.

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor. Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.

On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.


Feb 07, 2013 | Computers & Internet

1 Answer

Samsung T240 No Backlight

Look like your monitor is gone bad on you. I am not sure if you can get the parts you need. I would get another monitor form a friend and see if your monitor is gone bad. if it is I would get me a replacement. in the long run you will save some money.

Mar 24, 2012 | Samsung T240HD 24 LCD HDTV

1 Answer

Signal outof range

  • Make sure the pins on the video cable are not bent or damaged.
  • Make sure there are no extension cables or switch boxes attached to the monitor.
  • Verify that you have the proper drivers installed for the video card.
  • Verify the problem at all possible resolutions and refresh rates.
  • Make sure the refresh rate does not exceed maximum value for any resolution.
  • Test the monitor on a different computer.
  • Contrast is recommended to be set at a higher range while the brightness should be set at middle range. This helps to increase the text clarity while reducing the bright background.
  • If your monitor is equipped with moire control, adjusting this may improve the clarity of the text. Moire is a wavy distortion pattern caused by interference between the dot pitch of the CRT and the picture signal. The pattern may vary depending on the screen amplitude, contrast, brightness, and other characteristics of the input signal.
  • Monitor's performance may be affected by the Earth's magnetic field. Try rotating the monitor to different directions to improve misconvergence.
  • Most video cards offer a software utility that changes the frequencies and sync polarities for all resolutions. If the setup does not match with the monitor's characteristics, an incorrect signal may be displayed on the screen. Sometimes, the image may also appear blurry.
  • Aug 08, 2010 | Compaq TFT8020 18.1" Flat Panel LCD...

    1 Answer

    Unable to adjust the settings for brightness and contrast .

    To adjust the display settings:

    1. Press the flywheel control. The main menu appears.

    The current display settings appear across the top of the main menu.

    2. Rotate the flywheel to highlight an option. The name of the
    highlighted option appears in the center of the menu.

    3. Press the flywheel control to select the highlighted option, then
    rotate the flywheel to adjust it.

    Some options can only be enabled or disabled. There are also some
    options that contain additional menus.

    4. Repeat Steps 2 and 3 until you have made all your changes.

    5. Rotate the flywheel control until Exit is highlighted, then press
    it to exit the OSD control system.


    Contrast increases or decreases display image contrast.

    Brightness increases or decreases display image brightness.

    Horizontal Size increases or decreases the width of the display image.

    Horizontal Position moves display image to the left or right side of
    the screen.

    Vertical Size increases or decreases the height of the display image.

    Vertical Position moves display image to the top or bottom of the

    Pincushion curves the sides of the display image inward or outward.

    Trapezoid increases or decreases the trapezoid distortion of the
    display image.

    Degauss removes magnetic discoloration from the display image.

    Recall returns most options to the original factory default settings
    if the monitor is currently using a preset video mode. (See the “Video
    modes” section in this guide for information about the factory preset

    Advanced Option opens the Advanced Option menu. Color opens the Color
    Manager menu.

    Language changes the display language for the OSD control system.

    User displays information about the monitor’s preset modes.

    OSD Manager moves the OSD control window on the screen.

    Exit closes OSD control system.

    Jun 21, 2010 | Gateway EV 910 19" CRT Monitor

    1 Answer

    Brightness/Contrast Adjustment

    try going to the setup screen button left of adjustments

    try going to the set up menu on the left of the buttons come down to the slider control just above the information icon then go across to color reset hope this helps regards Jim

    Mar 12, 2009 | Samsung SyncMaster 2253BW LCD Monitor

    2 Answers

    Best Display Setting for LG Flatron L1732S

    Use these charts:

    Theory behind it here:

    Next time type into Google:


    Mar 17, 2008 | Gateway FPD2275W LCD Monitor

    1 Answer

    Unable to adjust contrast the OSD
    "NOTE: When using DVI source, the contrast adjustment is not available"

    Dec 06, 2007 | Dell UltraSharp 1905FP 19" LCD Monitor

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