Sometimes we suddenly find that one or several lights on the LED diffuse reflector light bar are not lit, resulting in a dark area in the light box, which is fatal to the advertising display of the entire light box. We need to find the reason and solve the problem. The following is the solution to the LED diffuse reflector light bar that does not light up.

1. A certain path of the light bar does not light up, check whether the positive and negative poles of the light bar are reversed, or the welding is reversed. If it is reversed, replace it. It's not tin soldering, just repair soldering.

2. If some lamp beads of a certain road do not light up, replace them and hand them over to the manufacturer for processing;

3. If it is found that the brightness of a certain part of the light strip is obviously dimmed, such as only 30-40% of the brightness, there are two possible reasons. One, the light strip may be short-circuited, such as the part of the welding line or the short circuit that may be caused by the parallel connection with the bus;

Second, the output power of the power supply is not enough or the output voltage is not enough. If the output voltage should be 12VDC, the test output voltage is only 7-8VDC, and the power supply can be replaced.

The above is the solution to the problem that the LED diffuse reflection light bar does not light up. If you need more detailed LED diffuse reflection light strip problems, please consult Shenzhen SUNLITE Optoelectronics Co., Ltd. Shenzhen SUNLITE Optoelectronics Co., Ltd. is a company dedicated to LED Light box lighting, a high-tech enterprise engaged in R&D, production, sales and service of sign lighting and decorative lighting products. Our website is http://en.sunlite-led.com, welcome to consult.