LED灯带没亮是什么原因?

LED Panel Light with Motion Sensor LED面板灯

IP54 LED Panel light LED面板灯

5050 RGB Bendable LED StripLED软灯条

5050 Series LED StripLED软灯条

SMD LED 360° Neon Flex PVC PVC LED霓虹管

2216 Series LED StripLED软灯条

Top View 15x15mm Silicone Neon Flex LED硅胶霓虹管

CCT & RGBW LED StripLED软灯条

Hecla Pedant Panel Light LED面板灯

CCT Tunable LED Panel Light LED面板灯

65mm LINIA Linear Lighting Fixture LED线型灯

38mm LITAN Linear Fixtures LED线型灯

5630 Series LED StripLED软灯条

2835 Bendable LED StripLED软灯条

3 in 1 Dimming LED Panel Light LED面板灯

UGR<19 LED Panel Light LED面板灯

Side View 10x20mm RGB Silicone Neon Flex LED硅胶霓虹管

Top View SMD LED Neon Flex PVC PVC LED霓虹管

Round LED Panel Light (Downlight) LED面板灯

8mm Recessed LED Panel Light LED面板灯

Side View 6x12mm Silicone Neon Flex LED硅胶霓虹管

LED Panel Light Kit with Motion Sensor LED面板灯

单人床床灯套装 LED灯条

7X Magnifying Make-up LED Mirror Light Kit LED化妆镜子灯

双人床床灯套装 LED灯条

RGB Single Bed Light Strip kit LED灯条

RGB Queen Bed Light Strip LED灯条

Digital LED Strip Kit LED灯条

CCT+Digital LED Strip Kit LED灯条

RGB+W+WW Strip kit LED灯条

TV Strip ( USB Strip ) LED灯条

CCT Tunable LED Panel Light Kit LED面板灯

LED Battery Sensor Strip LED灯条

RGBW LED Panel Light Kit LED面板灯

RGB+Digital LED Strip Kit LED灯条

LED汽车氛围灯套装 LED灯条

LED Cabinet Light Kit-CCT

LED Cabinet Light Kit-Dimmable

落地灯（墙角灯）

LED PIR Sensor Night Light Kit (Lithium Cell) LED小夜灯

LED Strip with Luthium Battery LED灯条

Make-up LED Mirror Light Kit LED化妆镜子灯