Publisher: Supplier of LED Display Time: 2020-05-08 Views: 1779
1. LED display resistance detection method: For the resistance detection method of LED display, we need to adjust the multimeter to the resistance gear, first detect the resistance value from a certain point of a normal circuit board to ground, and then detect the resistance value of another same circuit board. The same point test is different from the normal resistance value. If it is different, the scope of the problem of the LED display will be known, otherwise, it will be ignored.
2. LED display voltage detection method: The voltage detection of LED display is to adjust the multimeter to the voltage level to detect the ground voltage of a certain point of the circuit with suspicious problems, and compare it with the previous one. Whether it is normal or not, so it is convenient to identify the problem.
3. LED display short-circuit detection method: The LED display short-circuit detection method is to adjust the multimeter to the short-circuit detection block, so that it can be detected whether there is a short-circuit phenomenon. If a short circuit is found, it should be solved immediately. The short circuit of the LED display is also the most common LED display module failure. Also! Short circuit detection should be performed with the circuit powered off to avoid damage to the multimeter.
4. LED display voltage drop detection method: The LED display voltage drop detection method is to adjust the multimeter to the diode voltage for drop detection, because all the ICs of the LED display are composed of many single components, so when its When there is current flowing through a pin, there is a voltage drop across the pin. The voltage drop across IC pins of the same model is normally similar.
For the maintenance methods of the above four LED display screens, we can keep it in mind, and test them from time to time to avoid damage to our LED display screens, and can also extend the service life of our LED display screens. In this way, it can not only prolong its use time, but also save the following unnecessary budget expenses. Because some LED display manufacturers only provide after-sales service for one to two years, if they are repaired again after this after-sales maintenance time, they will be charged additionally.