This is somewhat related to the question I found here: Will a spike protector work in reverse?
I have a trusty old 3D printer running on the same power strip as my two computers including a screen.
Whenever I turned on the printer, my screen would turn off for a short moment before turning back on.
A few weeks later my screen would turn off and on continously, and when checking the connections of the screen I realized sparks were flying between the screens back plate and the display cable. The screen's warranty had of course ended a few months ago and I had to replace it in fear of fire hazard.
With my new screen, on the first time I turned the printer on, it too started turning off and on continously, even after unplugging the printer. I suspcted the worst, only now all puzzle pieces falling together. What if the printer produces a power surge when turned on and fried both my screens? Fortunately after plugging my screen into a different strip (and thus also performing a hard power reset on the screen) the problem seems to have subsided.
Now for my actual question, is there a way I can protect my devices from the 3D printer? Could I use a power surge protector between the printer and the power strip? Or plug in the power strip into a power surge protector and then into another power strip with the printer attached to it as well?