LED Lights Often See Faults and Maintenance Methods

How to repair the LED light? Zhuhai teaches everyone to learn to do it. Simple LED faults can also repair themselves. LED lights are different from the previous incandescent lamps. The incandescent lamps are basically broken. Basically, tungsten filaments are burned. LED lights are different. LED lights are composed of LED drive circuits and LED lamp beads. Most of the LED lights can be repaired, but the price of LED lights is not high. Dozens of dozens, so no one specializes in repairing LED lights, the price is high, others are unwilling to repair, the price is low, the labor cost is too low, so it can only be repaired by users. How to repair LED lights as general users? There are many reasons for the failure of LED lights, but there are some failures that are relatively simple. It is recommended that users can try to repair themselves and practice as practicing. LED lamps often see faults and maintenance methods 1. LED lamp beads are damaged. This is a very common failure. Generally, when LED lamp beads are burned, there will be black spots on the surface. Careful observation can be distinguished. For this fault repair, you need to equip a soldier iron. But what if there is no LED lamp bead? Can use 150ωThe left and right resistance replaces, if the constant current driver can be directly connected. 2. Filter capacitance failure. The simple LED light generally rectifies the AC electricity through the tolerance and lowering the pressure, and then power the LED lamp beads through the capacitor filtering. If the filter capacitor failure will cause the voltage unstable, the DC voltage is low, which makes the LED light darker. Measure the capacity of the filter capacitor with a multimeter capacitor file. If the error is large, the error is greater than about 30%. It means that the capacitance has deteriorated. Find a voltage resistance and capacity that is greater than equal to the capacitor parameter. 3. The capacity resistance drop -down module is damaged. The capacity resistance drop module consists of a capacitor capacitor and resistance parallel. It can be used to measure whether its capacitance and resistance can be damaged. 4. Return. Disassemble the LED light and check whether there is a disconnection at the internal input and output wiring. If so, use the electric soldering iron to fix it. 5. Rectification diode fault. There are faults such as opening roads and short circuits, which may be caused by over -flowing, or it may be caused by long -term use of failure. Find a rectifier diode with a reverse voltage resistant value greater than 350V and the working current greater than 0.5A, such as 1N4004 1N4007, etc. 6. LED constant current driving circuit failure. For professionals who need some electronic -related experience in this kind of failure to repair, they can find the technical staff of Zhuhai manufacturers for maintenance. The manufacturer specializes in the production of LED lamp beads. It is rich in experience. It is better to replace a new LED lamp bead after the above simple failure.