That's a C19 connector, the difference between the C 13 is that C13 is rated for 10A and C19 is for 16A, it's very common on bigger UPS like you have there.
Nice fix. Corrosion and moisture ingress is the root of all Pcb evil! You've now got me looking at my own UPS system.....maybe it's time for an upgrade.
Nice fix. In this case it wasn't the capacitor. I probably would have removed the oxidized solder. You just diluted the oxidized portion by adding more solder.
For the plug, i would have used some heatshring tubing, adhesive lined preferred, it's not a good idea to risk the screws not being properly engaged ;)
UPSs always run the charger at maximum possible float voltage, to get best runtime with new batteries. This results in premature battery ageing. Drop the float from where it is (a truly horrific 14.2V) to 13.2V, and you'll get 75-80% of nominal runtime and extend the battery life to 5y+. I had no idea NZ was so bad for battery prices, here in the Old Dart you'd pay no more than £15 a piece for decent 7Ah SLAs EDIT: Fans are considered a consumable in the UPS business xD
Yup, as Scott says anything further is up to me if I choose too or give it back to our ISP whom owns it, yet he might not wanna invest more in it so we might get gifted it. Again we thank Scott for his deeper dive into it that I couldn't find time for.
The Aishi caps can be alright. They have good stuff and bottom barrel ones at bottom barrel prices. Using the cheapest series in the worst conditions possible is very conducive to premature failure, so they're not outright bad for not standing up to way out of spec levels of abuse.
Looks more like "home office" UPS oriented to the people who doesn't know what REAL industrial UPS are tested to and capable of... But - thank you, interesting video, as always!
Try bluetack or hot glue if you must. Tape will still let the pressure inside the chamber cause the tape to vibrate, but with a thick enough barrier it won't. Piezo discs are silent and just tick/click if you put your finger on the disc itself. 🙂
