I've been programming for 50 years now. I've had all sorts of failures, including two incidents of my desktop computer burst into flames.

I now set the desktop on a piece of sheet steel. I also only use steel enclosures for them.

I have a Carver amp that runs 24/7 in my office, for the last 40 years. It's now emitting a 60 cycle hum, which I learned is due to decaying capacitors. I guess I need to get a cap kit and fix it.