The main display part of the LED display is composed of light-emitting diodes and IC drivers.
The most important one is the IC driver, which is the core component of the LED display. It is usually called the chip.
The chip controls the direction and size of the current to control the light and dark of the light-emitting diode.
Looking at the chip intuitively, there are many pins on it. In fact, each pin is not independent, nor is it in name only. There is a certain logical relationship between them, which is controlled by certain rules.
Under the control of the rising or falling edge of a certain clock, there is a regular on and off or cutoff, so that the display can display various text or picture information according to people's requirements.
Repairing chips is quite professional. It takes a few days to learn. You also need to understand English, read the chip information, and know the ins and outs of each pin on the chip before you can start repairing. The chip is used to transmit and control signals, so if the chip is broken, the LED display will definitely display incorrectly. At this time, the chip needs to be repaired.