Yeelight LED Ceiling Lamp Pro Starry (YLXD20YL)

Hello. After some time half of my lamp not working. It has two YLPW01YL led drivers inside. The main driver works correctly (LEDs connected to it are working). Another one seems not active. When I plugged the lamp into the power. All LEDs are blinking once, but then half of them (connected to the second LED driver) are turned off. Reset (5 power on-off) not help.