Tim: >> I have a UPS sitting next to me, right now, in pieces, which (half) >> died in a most peculiar manner: >> >> A burning smell was eventually traced to it. There's no visible >> signs of burning, and no schematic available for the model, that I >> can find. A rather acrid smell, not one I'm used to with component >> failure, I'm beginning to suspect a large AC transformer.
Mauricio Tavares: > Did you check the impedance of the transformer? Not yet, the lack of schematics put me off, I'd really have to delve into reverse-engineering it to fix it (assuming I could get any needed parts), it's a very old model (SOLA 310). If the transformer had cooked one of its windings, I doubt I'd find replacement (there are multiple windings), and the board is chock full of ICs (very few discrete components). I never really bothered with UPSs at home before, but we've been getting lots of little power cuts the last year. Previously things were very good here. You might have gone a year or more without any interruptions. The other thing is that this only has a few minutes of supply capability, allowing you to ride through blips on the mains, and cleanly shutdown during longer power failures, but not carry on working for a prolonged period. Though my modern low-power PC gives much more runtime than the UPS's prediction in its manual. And it was quite noisy in stand-by mode, while AC powered, it had quite a hum to it. Bad enough that I'd run it in the adjacent room, with long leads running to and from it. Much as I dislike waste, and I repair a lot of equipment, I've been considering something newer with more capacity. -- NB: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the list. The following system info data is generated fresh for each post: uname -rsvp Linux 6.1.14-100.fc36.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Feb 26 00:31:11 UTC 2023 x86_64 _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
