I think (but may be mistaken) that I mentioned this here several months ago, that I had an APC Back-UPS something-or-other complain about failing batteries. And that I replaced the batteries, but the confounded thing kept beeping at me, reliably, every 14 minutes and 53 seconds. The UPS is in my basement, you can hear it throughout the ground floor of the house, more faintly on the second floor, and super loud in the basement itself. In April, I bought a diagnostic cable to try to figure out what it was complaining about, but I didn't get anything informative out of it.
Then, months later, just about a week ago, having considered just finding the wire to the speaker that was making the sound and cutting it, I was standing in a particular spot in the basement where the direction to the beep could be discriminated at the exact moment it happened to beep, and I got a clue: the direction wasn't exactly in the direction I expected. Another minute of closer inspection, and it appeared that *A COMPLETELY DIFFERENT UPS* was responsible for the beeps. The replacement battery arrived today, and I plugged it in. The house seems eerily quiet now. -- Russell
