A major technical problem of LED street lamp products, the chip of the LED lamp beads and the structure of the lamp body, these aspects directly affect the stability and quality of the LED lamp products. Poor heat dissipation is reflected in the increased light decay of the lamp beads. , The time is advanced, on the one hand, it is reflected in the shortened life of the internal components of the LED power supply, causing the driving power supply to be easily damaged. At present, there are quite a few domestic manufacturers of lamp beads, lamp manufacturers and driving power supply manufacturers, but the product design of that designer can better solve these two or three problems and determine the quality and life of the product.
The most common method is to use a heating table to heat on the aluminum substrate. When the tin is melted, the unnecessary lamp beads can be removed. Another method is to use a hair dryer to heat the bottom surface of the aluminum substrate.
LED patch replacement skills:
1. I recommend using reflow soldering under normal conditions, and only manual soldering when repairing.
2. The maximum power of the electric soldering iron used for manual welding should not exceed 30W, the welding temperature should be controlled within 300℃, and the welding time should be less than 3 seconds.
3. Do not touch the gel with the soldering iron tip.
4. When the pin is heated to 85°C or higher than this temperature, it should not be pressed, otherwise the gold wire bond will be disconnected.
