Cyclone X 4

Hello to anyone on here who could possibly point me in the right direction to sorting out my android tv box (sumvision cyclone X 4)
I’ve had trouble free viewing for almost 2 yrs .. the other day when I switched on all I got is the SUMVISION logo on black screen … nothing else.
I have unplugged it .. and plugged it back in but its still the same.

you can probably guess from my request that I’m not a Techy…any simple fix or advice would be massively appreceited.