I bought these in May to replace the existing lamps in my projector. I actually didn't have to replace them until July. When installed, only one of the three bulbs worked. I'm not sure if they were defective or damaged in transit. They were filled with large air cushions. Your return period has expired. Come to think of it, I would install them upon receipt just to make sure they work.
Smart socket Yandex with Alice, black
30 Review
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review