One of our Philips Hue lamps died recently and I found that the power supply is the reason. Two resistors burned (most likely due overvoltage from the mains). However there a SOT-23 packaged component that I couldn't identify.
Probably this is a http://www.alfa-mos.com/datasheet/HVMOS/AFN501DEA.pdf, but I'm not sure. Check the photo below, "501de". Unfortunately, I didn't find an alternative/replacement component for this. Could somebody help to find one? Thanks!