Answer: Mainly divided into 3 categories of reasons, troubleshooting is from "simple to complex": ① Poor contact: Check whether the light strip joints, solder joints, and power wiring are loose, and re-tighten/solder them; ② Insufficient power supply: If the total light strip power exceeds 80% of the rated power of the power supply, it will cause insufficient load. Replace the power supply with a higher power matching; ③ The light strip body is broken: the flexible circuit board of the neon light strip is broken, and the faulty section of the light strip needs to be replaced.