At Sun, 14 Jun 2026 10:13:32 -0400 Eben King <[email protected]> wrote: > > On 6/14/26 10:07, John Hasler wrote: > > Before you replace it open it up and reseat and retighten all the > > connections (especially the battery terminals). > > Did that. I disconnected them all, checked the battery voltages (13.4 > and something else reasonable), and checked the 60A fuse between them. > It's a weird fault, that it goes instantly from completely normal to bad. >
Does it still work as a "dumb" UPS? If so, one possible temp solution is to get an "old" dialup modem. Plug the modem's power brick into the *mains*, and connect the modem's TTY connection to a RS232 <=> USB adapter and then you can get powerd and have it monitor the ModemReady signal. The modem will assert ModemReady so long as it has power. ModemReady will drop when there is a power failure. (I suspect that this is probably not really a viable option. Back in the day, when PCs still had RS232 ports and dialup modems were common and cheap -- having an old 2400BAUD one lying about when you replaced it with a 9600 or 19.2K one would be common. These days are probably rare and PCs no longer have RS232 ports...) > > -- Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services [email protected] -- Webhosting Services
