Four effective detection methods for full-color LED display screens

With the increasing application of LED display screens, they can be seen almost everywhere in life. Whether it is outdoor advertising large screens, indoor high-definition large screens, small-pitch LEDs, etc. LED display screens are undoubtedly one of the most widely used large-screen products at present. However, any product will have its service life and optimal use period, and the same is true for LED display screens. After repeated operations, problems of one kind or another are inevitable. At this time, we need to solve and maintain it so that it can continue to serve us normally. Next, Chuangkaiguang Technology will discuss and share with you several maintenance methods of LED display screens, hoping to be helpful to you.

1. Display resistance detection method

For the resistance detection method of the display screen, we need to adjust the multimeter to the resistance level, first detect the resistance value of a certain point of a normal circuit board to the ground, and then detect the same point test of another identical circuit board to see if it is different from the normal resistance value. If so, we know the scope of the LED display screen problem, otherwise, we will ignore it.

2. Display screen voltage detection method

The voltage detection of the display screen is to adjust the multimeter to the voltage level, detect the voltage to ground at a certain point in the circuit with suspected problems, and compare it with the previous point to see if it is normal, so that the problem can be easily identified.

3. Display screen short circuit detection method

The short circuit detection method of the display screen is to adjust the multimeter to the short circuit detection block to detect whether there is a short circuit. If a short circuit is found, it should be solved immediately. The short circuit phenomenon of the display screen is also the most common failure of the LED display module. In addition! The short circuit detection should be performed when the circuit is powered off to avoid damaging the multimeter.

4. Display voltage drop detection method

The voltage drop detection method of the display screen is to adjust the multimeter to the diode voltage to detect the voltage drop. Because all integrated circuits of the display screen are composed of many unit components, when current flows through one of the pins, there will be a voltage drop on the pin. Under normal circumstances, the voltage drop on the IC pins of the same model is similar.