Modern LCD monitors consist of the main parts: power supply, matrix, inverter. Since the equipment is assembled from parts of various manufacturers and at individual enterprises, the quality, of course, can be different even for monitors of the same manufacturing company. It may be a factory defect or improper design of electronics equipment. Repair consists in determining the causes of failure and debugging by replacing failed parts, if necessary.
What may cause interference on the monitor
Many computer users often encounter interference on the monitor, as a result, the image is greatly distorted. This is expressed by jittering or darkening of the screen. All interference is divided into two groups:
- caused by improper software installation;
- caused by external factors and equipment breakdown.
Reference! Sometimes interference on the monitor can be caused by power surges. This is usually caused by simultaneously connecting a large number of electrical appliances to the network.
What kind of interference
Monitor malfunctions are typically the following:
- Inverter damage. This device is required to supply voltage to the backlight. And the screen is getting dark.
- Mechanical malfunctions of the monitor matrix. The ingress of water or small objects. The picture may be partially displayed, stripes may also appear. If foreign objects get inside, the monitor may break completely.
- Damage to the processor control chip. Moreover, the picture may change in form, a message appears on the screen settings, open windows can move.
- Damage to the backlight. In this case, most often the screen darkens. The bulbs may fail due to damage or burn out due to continuous use of the monitor at high brightness.
In practice, most breakdowns occur due to failure of the electronics.
How to get rid of interference
Before proceeding to the solution of the problem, try connecting the monitor to another system unit - this way you can determine if it is malfunctioning, the computer or the monitor itself.
Graphics card malfunctioning
It is likely that the video card failed due to overheating, in this case it is necessary to remember whether the video card was overclocked, if so, reset the overclocking settings. If this is done in a timely manner, then the video card will start working in normal mode, if overclocking was not performed, then the video card is probably broken.
Graphics card drivers
There are times when interference occurs, for example, during the launch of certain games, sites or programs. In this case, the problem often lies with incorrectly configured video card drivers. If the cause of the interference is not in the old drivers, then it is probably a matter of overheating.
Motherboard
If you visually see swollen microcircuits, capacitors, or other physical malfunctions on the motherboard, then it is likely that interference occurs precisely for this reason. If the cause of the malfunction occurs due to a breakdown of the motherboard, then in this case it is almost impossible to make an independent repair, and a repair in a service center costs almost as much as a new motherboard.
Overheat
First you need to determine what is the permissible and critical temperature for each element (video card, processor). You also need to independently measure the heating temperature of the monitor. If everything is normal with the temperature of all elements, then you need to look for another reason for the breakdown. If it turned out that some element is overheating, then you need to understand the malfunctions further.
If the processor overheats, then the thermal interface is probably dry. Strong heat can also be caused by dust and dirt. If the fan or radiator grill becomes clogged, then there is simply not enough air flow for normal cooling of all elements.
Attention! In fact, it is not difficult to determine the cause, it is necessary to open the system unit case and visually determine the condition, if a large amount of dust is collected on the radiator grill or on the fan, then most likely the reason lies in this, cleaning is required.
Power Supply
The cause of interference may be insufficient voltage from the power supply. In this case, you can connect a more powerful power supply, if the problem disappears, then the reason lies precisely in the PSU.
During a malfunction, of course, it is better to contact professional craftsmen. They will help save time and money. Since self-repair is often costing the acquisition of a new monitor or another element of the computer. Not knowing what and where to repair, it is best to entrust this work to specialists.
Leave Your Comment