Bernie the old school of saving dollars and wear and tear on a unit was to turn it off. I never turn my computer off. If my set up is in my garage (where I can be loud) and I am using the equipment it gets turned off only if I am leave for an extended period.

I have a light on a pole in the front of my home; it has the house number: we call it the lollipop. It has a 40W bulb which I replace 2 to 3 times a year. The control shuts the bulb at dawn and turns it on in the evening. As I was replacing the bulb I damaged the control unit ---- the bulb/light now stays on 24 hours a day and I have not
replaced the bulb in three years.

I have to be honest --- I do what I have written above but it goes against my old beliefs.

I try not to use the same PA to long. When it begins shows signs of wear I replace the same PA or move on to what is new and inviting.

John C.
Ps, in the many, many years of playing my PA shorted out once. The owner of the home had wired a 220 wire into outlet into a 110. The head blew. I ran lines from my fender Twin Guitar Amp to the speakers. At best it was fair, but we finished the job.