LED light-emitting words are very popular in the advertising market nowadays. Because of the majority of users, there are many kinds of faults. For example, if the light is not on, there are many reasons for the light-emitting words not on. Of course, there are many maintenance methods. Let's take a look at the specific led punching light-emitting words do not light what are the reasons?
1、 When it was on, it all went out: the reason was that the transformer failed and the LED lamp was burnt out.
2、 Lights are not on: this reason is not easy to find, the line is blocked, the transformer is broken, check the line and transformer. Or there is faulty welding.
3、 Some are on, some are not: This is the reason for LED lights. Although the LED module is in series, its electrical reason is parallel connection. This prevents one lamp from breaking down and affecting the brightness of all lights. Change the light and it's done.
So, how to implement the inspection steps?
1. When checking the light-emitting words, special personnel are required to carry out disassembly and assembly, and the staff are required to wear gloves. When disassembling the plastic light-emitting words, the operators must wear pure cotton white operating gloves. Because there are oil, salt, acid, alkali and other components in hand sweat, they are corrosive. If they are stuck on the stainless steel, they will slowly corrode the stainless steel surface, so that the stainless steel surface will slowly fade and change color, and lose the original beauty.
2. 轻拿轻放，发光字一般比较的多，需要注意拿的角度，以及注意要轻男轻放，拆装吸塑发光字外框时一定要平拿轻放，禁止碰撞及扭曲，把外框平放在地面上。轻拿、平起、平挂，然后再把发光字下部合上，用内六角螺钉固定 。
2. Handle with care. Generally, there are many luminous characters. It is necessary to pay attention to the angle of holding, and pay attention to the gentle handling of men. When disassembling the outer frame of the blister luminous character, be sure to handle it flat. Do not collide or twist it. Put the frame flat on the ground. Then close the lower part of the luminous character and fix it with the hexagon screw.
3. Pay attention to safety and the safety of the circuit. During the inspection, it is necessary to cut off the power supply, pull out the plug, disconnect the power supply (it is forbidden to use the leakage protector as the power switch), and then conduct the inspection of the electrical components (live operation is prohibited). During the inspection, it is required to be careful, such as the inlet hole of the power line, the input and output terminals of the ballast, the wires on the lamp holder, etc
4. Check whether the power line on the upper part of the blister light-emitting character is in the power access slot. If there is no need to make correction, plug in the power plug and close the main power switch to see whether the lighting is normal. If one side is on and the other side is not on, please first disconnect the power supply, pull off the plug, and check whether the lamp holder wire is loose or not in place; whether the ballast input and output wires are loose, etc.