Xiaomi Mix Stick Issue Persists

My Xiaomi Mix stick problem persists, and it's the same one every time. After purchasing it, I was hoping to use the internet without interruption, but the screen goes black every 15 minutes while the sound remains constant. To resolve the issue, I must turn off and then on the television, but this only works for about ten minutes before it occurs again. It's driving me insane that I can't figure out what's causing this problem, and it's getting more and more frustrating. If the device is broken, I will have to seriously consider purchasing a replacement, but in the meantime, this is becoming a major annoyance. We would appreciate it if you could provide a proper fix and keep us updated if you have a solution to this problem.