"David Harmon" wrote in message
...
I recently got an ancient monochrome video monitor from a friend.

This thing probably hasn't been powered on for fifteen or twenty years.
I'm thinking I will put it on a variac and turn it up slowly from zero
over several hours, to maybe let electrolytic caps reform, and avoid
anything else that might object to getting suddenly whacked with a full
120 volts. Is that a good idea? Is there anything in a video monitor,
like maybe the high voltage supply, that will object to running on
reduced voltage for a few hours at first?

**Very risky. The thing may use a SMPS. It will certainly use an LOPT driven
by a high frequency oscillator, which may or may not start, when gradually
ramped up. You may end up causing more damage. Or not. It's a crap shoot
IMO.

Trevor Wilson