If it makes noise when you shake it, the driver (power) that is peeled off inside. It's not serious, but not to shake otherwise it may break a weld. If it does not light it can be a weld that broke. Ask an expert check. To remove remove the ring from above, do not try to side bushing is dismantled. performance side; I measured 11watts. I also doubt what makes 1400lm. 1400lm this erait equivalent to 100Watts incandescent bulb, then it's more like ... But 80-90Watts illuminates well, beautiful color, not too yellow.