I also restart them once a week or so as I believe it clears out a lot of unwanted files etc.
That one is vital, clears out the unwanteds and resets a lot of things to nominal conditions.
The satellite receiver that failed had a power switch which I used to turn it off. Did not power-up again when turned on.
The SKY digital satellite receivers do not have a power switch so stay on permanently and are now about 20 years old (first generation) and although slow, are working.