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| Home >> Resources | Support >> Manufacturer FAQs >> FAQ - ViewSonic >> |
Frequently Asked Questions about ViewSonic Monitors (CRT)|FAQ-Intel | FAQ-Logitech | FAQ-ViewSonic | FAQ-Kingston Memery | FAQ-Viking Memery | | FAQ-Western Digital | FAQ-Seagate | FAQ-Maxtor | FAQ-VIA | FAQ-3COM | | FAQ-ACER | FAQ-HP | FAQ-Creative | Color Problem Make sure the pins on the video cable are not damaged or bent. Verify the video cable is securely connected to the video card in the computer. Be sure that all electronic devices are at least 3-4 feet away from the monitor. If your monitor is equipped with a manual degauss function, try to degauss the monitor to see if the color dissipates. If this function is not available, then turn the monitor off, wait about 15 minutes, and then turn the monitor back on. This will cause an automatic degauss to occur. Try moving the monitor to a different location in the room. Test the monitor on a different computer to isolate the problem further. Distortion Tilted Screen: Use your tilt control adjustment, if available. If this feature is not available, then adjust the image's lower edge aligned to the bezel. Individually measure the height of the image's left edge and right edge. The difference of 1/12" or less would be considered within specification. Turn the monitor to face different directions. The monitor is recommended to face East for optimum display. Any non-square shape (trapezoid or parallelogram), pincushion, barrel, or image shifted: Use the controls provided either on the front panel of the monitor or through your OnView Controls, if available. Verify the problem at all resolutions. If the problem does not occur at all resolutions, then it is usually an indication of a video card problem. Try a standard VGA driver in Windows to verify the consistency of the problem. If the problem does not occur with the Windows standard VGA driver, then there may be something wrong with the video card's configuration or the card may be defective. If the distortion is not evident when tested on a different computer, the video card you are using may be defective. Please consult with your video card manufacturer for further assistance. Focus and Misconvergence 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. Power Problem Make sure the power cord is securely connected to the monitor and power source. Check the power source with another device such as a radio to make sure that the monitor is receiving voltage. If the monitor is plugged into a power strip, try connecting to a dedicated wall outlet. For pulsating image, remove any electronic devices at least 3-4 feet away from the monitor. For high-pitched noises, try plugging the monitor into a different power outlet. If there is a horizontal line scrolling from top to bottom of the screen, try the monitor with another computer and power source. The monitor is not receiving enough power input. Shadowing or Ghosting Problem When an extension cable is used, the improper shielding of the video cable will cause a shadowing or ghosting effect. This improper shielding causes a mismatch of the input impedance between the video card, the video cable, and the monitor. If you need an adequate extension video cable, please contact ViewSonic Parts Department at (800)688-6688 or email vsparts@viewsonic.com. In addition, if using a switch box or low quality cable, these two items will also cause signal degradation. Check the video cable to make sure all the pins are in good condition. Test the monitor on a different computer. Sync Problem Select a Different Desktop Theme Make sure the pins on the video cable are not damaged or bent. Verify the video cable is securely connected to the video card of the computer. Verify that the video card is pressed evenly and securely into the bus slot of the computer. The monitor will not sync properly if the video card utility is not installed. Make sure the correct monitor is selected in Display Properties. If the image starts to scroll, the frequency is too high. You will need to access the video card directory, find the video card setup mode, and reduce the frequency. If the video card is set to run at 800x600 @ 100Hz and the monitor is only able to support 800x600 @ 75Hz, the monitor will not sync correctly. Make sure the display resolution and refresh rates are within the specification of the monitor. Two faint horizontal lines on my monitor screen The two lines you see are called horizontal damper wires. These damper wires are required to maintain the aperture grille's alignment and will cast a shadow on the screen. In most applications, these lines will blend into the background, but they will be visible against lightly-colored screens. They are an integral part of the technology and are not considered a defect. Unable to display more than 16 colors The amount of colors displayed on the screen is dependent upon the amount of video memory your video card holds. Therefore, you will need to either install the latest drivers for your video card or upgrade the memory of your video card. Please check with your computer or video card manufacturer for location of those drivers. In addition, please make sure you have the proper monitor inf file installed from the CD or diskette supplied with your product. Jump & Flicker/Interference Problem If applicable, verify the proper inf file is installed for your monitor. Verify the proper drivers are installed for your video card. Make sure the refresh rate is at 75Hz or above. Verify the problem at all possible resolutions and refresh rates. Be sure that all electronic devices are at least 3-4 feet away from the monitor. If your monitor is near a wall, any transformers or power lines inside the wall may cause the monitor to flicker or jitter. Make sure the power cable is plugged directly into the wall outlet or surge protector. Do not connect to a device that might share multiple connections. The power fluctuation may cause ripples, jitters, or flashes on the screen. Try moving the monitor to a different location in the room. Test the monitor on a different computer to isolate the problem from the video card. (Source:ViewSonic) Related Items: | ViewSonic Monitors | |FAQ-Intel | FAQ-Logitech | FAQ-ViewSonic | FAQ-Kingston Memery | FAQ-Viking Memery | | FAQ-Western Digital | FAQ-Seagate | FAQ-Maxtor | FAQ-VIA | FAQ-3COM | | FAQ-ACER | FAQ-HP | FAQ-Creative | Go to Top | | ||||||
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