In this article, we’ll discuss some of the most frequent desktop monitor problems and solutions All the elements of a computer are extremely important, in such a way that if one of these fails the machine can be in poor condition even if it does not work again.
The screen or monitor is that component that allows the user to appreciate and use correctly each of the programs that are installed on the computer so that if it stops working we will have to look at how to solve this problem.
I’ve written a complete hands-on review of the best computer monitors for work, where I outlined durability issues I ran into.
Common desktop monitor problems and solutions.
I hope they are very helpful for everyone and in case your computer screen presents a problem, these are the most optimal solutions.
#1) No video signal and LED off.
Check the connections at both ends of the video cable. Check if you have the computer and monitor connected to the power correctly, check if the power button is pressed correctly and increase the brightness and contrast levels. You can also check the monitor’s self-test function. If this problem is not solved, verify that it is not the video card. It is advisable in this case that you change the monitor, in this way you will notice if the one you are using is damaged.
#2) Poor focus.
Remove video extension cables if you have them, then restart the monitor and check the brightness and contrast levels, finally reduce the resolution of the video or increase the font size.
#3) Unstable or shaky video.
To try to solve this fault let’s start by restarting the monitor, check the environmental factors such as fluorescent light or some other high power that may be plugged into the same AC circuit. An example may be a microwave oven. After doing this, change the site pc and plug it into another outlet, away from high power.
#4) Color missing or a flood of color.
Start by restarting the monitor, check the self-test function of the monitor, check that the video signal cable pins are in good condition, if not, replace it with one that is in optimal condition.
#5) Brightness problems.
Restart the monitor and adjust the brightness and contrast controls.
#6) Geometric distortion.
Restart the monitor, make sure it is in proper video mode and adjust the appropriate geometric control.
# 7) Curved fine lines.
Make sure the monitor is in the proper video mode, adjust the size and then the horizontal and vertical moire controls.
#8) Problems with synchronization.
Restart the monitor, execute the self-test function. Check that the video cable pins are in good condition if not, change it. Restart and choose the option to fail-safe mode.
#9) Audible noise problems.
Make sure the monitor is in the proper video mode, reposition the monitor. If the monitor throws a buzz that is normal. If the problem persists, it may be that the voltage regulator is failing, if so, repair the source or replace the monitor.
#10) Smoke or short circuit problems.
Unplug the monitor from the outlet, disassemble or check the electronic card. If you have a burned or damaged component if it is a capacitor or transformer replace it with an equal one.
#11. The monitor produces hum or noise.
These noises are natural on the monitors. But if the noise is too loud, this can be a problem if it distracts you from your work, repairs or changes the monitor.
#12. Loose connections:
If the image is lost or appears in a single color or weak, check the monitor cable. Make sure that one end is well connected to the monitor and the other end is well connected to the computer.
#13. Distorted image:
This may be a sign of interference from another electronic device. Magnetic fields can distort the image on a monitor. If the monitor is exposed for long periods, the magnets can permanently damage the monitor. To solve this problem, move the monitor away from what is causing the interference.
#14. The image is blurred:
Monitors lose their sharpness over time. A signal from an old monitor is a blurred image. If the image does not improve while the monitor is on, remove it and get another monitor. Another way to fix the blurry or flickering of a monitor is to adjust the refresh rate.
#15. The monitor turns on but the image does not appear:
There may be several tests we can do before reporting the problem as an electronic fault. In most cases, this problem is caused by the contrast and brightness adjustment buttons physically moving. Another possible cause is that the cable in the video card connector is loose or loose.
#16. The screen turns off after a while of work:
On new computers, the ROM BIOS (Setup) program offers the possibility to turn off the monitor in order to save energy consumption. To determine if your device has this option enabled, when the monitor is turned off, move the mouse or press any key; The image must return, if it does not occur, report the damage to qualified personnel.
#17. The image on the screen, oscillates or moves:
This fault is very common and occurs in the following cases:
ü The power supply is low and this generates a fluctuation in the image.
ü The monitor connector on the video card is loose. This can also cause your image to be rotated or the colors changed.
ü The site where the computer system is located is close to fans, air conditioning systems, large fluorescent lamps among others. These elements produce magnetic fields that affect the operation of the screen. The solution, in this case, is to change the screen site until the image is stable.
If these desktop monitor problems and solutions do not solve anything you should make a more thorough examination of the different components, such as voltage measurement. Another option is to measure each of the output voltages to determine if there is any short or anomaly. If the damaged component exists, these can be capacitors, replace them and check again.
Note: Before disassembling the monitor, it must be unplugged from the outlet, try to disassemble it on an insulating surface such as wood and plastic.