How to check the monitor matrix
The main component in a TV or monitor is the matrix. It is she who is responsible for the image quality, as well as for the brightness, contrast and clarity of the picture. In order for the device to work as long as possible and its parameters to be the best, when choosing a monitor, first of all, attention should be paid to the matrix.
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What is a matrix and what is it responsible for?
The matrix is the main and most important part of the monitor. It is on it that the image is formed, and its quality depends on the matrix. It is also the most expensive component in the device. It is often cheaper for the user to buy a new device than to replace this particular component.
In order to check this element, you must first disassemble the housing. The simplest way to check the functionality of this component is to connect a multimeter to a special cable on the board. This will allow you to check the functionality of the contacts and the presence of power between the elements.
REFERENCE! Checking the functionality of the components will allow you to find a malfunction or eliminate working components.
If each component is supplied with sufficient voltage and no faults are found, the problem may be with the decoder. In order to check this, you should solder an additional energy source to the power input. After this, you need to turn on the monitor in “test mode”.If stripes or distortions are observed in this mode, then the matrix is faulty. Otherwise, if the test mode showed the correct image, the problem may be a violation of the integrity of the contacts or cable.
Basic matrix malfunctions
Often this is damage to the surface with LCD crystals. In this case, the image is distorted and the screen “flows.” In this case, the best solution would be to either replace this component or replace the entire device.
The screen does not light up. There are two reasons for this:
- Lack of power to the elements. To check this, just connect a multimeter to all contacts and look at the supply voltage.
- Backlight not working. To exclude this option, just shine a directed light on the monitor. An image will appear at a certain angle. If this does not happen, the fault lies elsewhere.
The image is rippling and stripes are visible. This problem indicates a malfunction in the decoder. If you have sufficient knowledge and skills, you can make the replacement manually, but it is better to use the help of a competent specialist.
