Digital clock with seven segments display flickering

My no brand digital clock is beginning to flicker. Numbers are the
illuminated kind, 7 segments display and not LCD. Powered through USB
cable.

I have been using it for about five years. Most evenings I switched it to
the touch sensor so display is actually off for the night. Trying to extend
the display lifetime.

There’s anything I can do to fix it? Thanks for sharing.