This afternoon I will be shutting down my whole network to permit the installation of a new UPS. The site will be back ASAP, though I will take the opportunity to tidy up cabling and remove dust at the same time.

Similar experience with dust. Several radio's have not been used for demo's etc for around three years and several tuning gangs are scratchy & full of dust.

Dust is a major issue here (Rural).

The display unit in my bedroom is much the same, though here it is a different kind of dust - concrete jungle soot, etc. There's around 85 radios that need damp dusting before spring.

Mission accomplished. Protection is back in place since the old UPS blew up.

Ahhh! Yes. UPS blows up. As before with the one here that did a "China syndrome" with its batteries, like a Nuclear reactor in USA.

Serious design issue. No current limiter on the charging circuit, no thermal fuse PTC, or anything if the battery drops a cell. Which mine did, & in the past few years I have seen many automotive types do that.

I am surprised around here that RF riding on the lines, does not cause more flashovers, especially with water & dirt added.