Hi, do you someone know if Aqara mainboard is produced by Yeelight? PCB looks very similar.
I have problem with noisy buzzing from power supply part.
I bought 2 lights and the same problem.
Do you have any idea how to repair it?
Thank you
Mine are also buzzing. Have you found a solution?
Nope. I tried to change some capacitor which sounds strange but nothing.
I discussed it with technical support of yeelight and because I bought it from official partner, yeelight refund the money to the partner and seller refund money to me.
Then I bought Yeelight A2001C550 and it is amazing 
Now I’m really worried. So there’s no solution. Some mentioned applying glue to problematic components. I will have hard time returning them since I’ve both them on Aliexpress (2 pcs) and Tomtop (1 pc) more than a year ago. Besides, they are already installed and would be easier to somehow fix them instead of replacing and drilling now holes. I wanted to have zigbee version in first place since I’m using them as routers. In combination with smart switch direct binding they stay on all the time, so buzzing is always present.
Understand… maybe it will be easier to find someone who is skilled enough in electronics and repair it… the problem will be in the power source so I believe that someone can repair it.
I bought them on AliExpress as well.