Crt image sharpness depends on many factors including beam size, focus, color registration, and video bandwidth. Display problems in crt tvmonitor electronics repair. The longstanding rule of thumb was that a monitor s depth matched its diagonal crt size. Mag innovision 720v2 crt monitor 17 overview and full product specs on cnet. Simulating crt or vector displays for more realistic emulation. It is important to know these images so that you will know which section to check when you. At this point, any major discoloration or distortion problem youre seeing on your monitor is probably due to a physical problem with either the monitor itself or the video card.
Why does my monitor stretch and distort my display. Hvsize, pincushion distortion, degauss, trapezoid, recall settings, rotation. Crt makers had been trying to reduce the depth by increasing the angle of deflection within the tube. By jestine yong on may 9, 2010 i suggest that you print out this images of crt tv monitor display problems for reference.
Inside the desperate fight to keep old tvs alive the verge. Exposing a crt to a strong magnetic field, such as unshielded speakers, can cause more extreme image problems. Compaq fs740 crt monitor tested readyvintage gaming with. When i try to edit image distortion pincushion and pin balance, i cant edit it and even if i try, it just stays at 100 while other image. A crt that sits in one position for months or years can be affected even by the earths very weak magnetic field, causing distortion and other display problems. If so, i will sell my monitor and get a smaller one, but i suspect a new video card might cure my problem. Pincushion distortion, brightness, convergence, language select, tilt. Corner distortion is a normal characteristic of crt displays. Its caused by the color guns being subtly out of alignment due to the guns hitting the far corners of the display from slightly different angles. On a variety of crt monitors ranging from sony 19 to off brand 17, i have noticed that when a white field is brought up, the. Do all widescreen monitors distort and stretch the image out sideways. Why crt monitors image expands when a bright image is. How to fix discoloration and distortion on a computer screen. If your monitor works fine on another computer, there may be a problem with the video card in the computer.
Replace the monitor when you try another monitor in place of the one you have and the problems go away. To some beginners, they do not know how a pincushion or a keystone distortion problem look like. To verify if it is the monitor, connect the monitor to another computer. The different types of crt monitors from shortneck to fst. Use the displaymate focus matrix, resolution matrix, scaled fonts, page of text, and defocusing, blooming and halos test patterns to evaluate sharpness over the screen. Gateway ev910 crt monitor 19 overview and full product specs on cnet. Flash works fine, games run fine, all videos work fine. Why crt monitor s image expands when a bright image is displayed. Details about compaq fs740 crt monitor tested readyvintage gaming with many resolution modes 1 viewed per hour compaq fs740 crt monitor tested readyvintage gaming with many resolution modes. I spent over 18 years as a software engineer at microsoft. The larger the viewable area gets, the more the crt s depth increases. If the monitor has the same distortion on another computer, you have a bad monitor.