On Sat, 24 Oct 2009 23:41:32 -0700, David Nebenzahl
wrote:

Dell-branded Sony Trinitron. Has been working wonderfully for many years
up until now. It's starting to turn itself off; the relay clicks, the
power light goes out and all goes dead. Turning it off for a few minutes
revives it, but I'm afraid this might be a chronic condition that will
only get worse. (It's the same relay that clicks when powered on and
when the monitor "wakes up", I assume.)

Anyone know any common causes for this, and how to fix? It's a really
nice tube, and I can't afford anything else at this point anyhow.

Local Goodwill stores have many CRT flat screen monitors, usually
around $20, you might find a replacement there. I've seen Sony
Trinitrons there and in fact took some there myself.