Hi,
I also have the same problem, where the light will not power on and there is no response to any of the physical buttons, with one of my bedside yeelights (i have two). On both the versions mjctd01yl I have there are no 2032 battery on the bottom of the circuit. I swapped the circuitboards between my working and non working light and it lit up. It at least shows the problem is with the circuitboard be it hardware/software. Is it possible to order a replacement circuit board? My miui account id is [1765796805] if this helps trace what the problem is.
Do any yeelight staff look at the forums anymore?
is it possible to get replacement parts for the Mijia Bedside Lamp ?
my second yeelight beside light just failed within 6 months of purchase, in the same way as the first one. talk about extremely POOR QUALITY light not to mention the even worse support from yeelight.