[Dylan16807]

Well, I can think of a lot more ways for losing a phase to break things than a voltage drop.

For a voltage drop, the main idea that comes to mind is something trying to keep up a constant wattage and drawing increasing current to make that happen. But you have to do quite a bad job to design that circuit and not have a current limit.

And a PC power supply is inherently flexible on the input voltage, so it would never have the problems you get with a fixed ratio transformer on that old equipment.

[dylan604]

Unfortunately, there are a lot more things in the world that need a power supply than a PC. Sorry if my use of PSU unintentionally narrowed the focus, just faster to type. The power supply for these high end video machines were not small, nor come with a cheap price tag. I would not have expected them to be made poorly as they are specialty units designed to run precision analog electronics. That would be comparable to expecting nylon seats in a Ferrari.

From all of that, I have learned the lessons of how dips can ruin electronic equipment (even if not the exact why back then), so for me and my house all electronics are hooked up to a UPS or power conditioner. Appliances are on their own though as that's the landlords problem! Multiple times a week, I get noticeable dips where the lights visibly dim and I can hear all of the UPS units kick in and back to mains a few seconds later.