Sounds bad. Call it in and get them to replace it.
Bob
I bought an APC UPS 2 months ago. It was working ok except today. After a power failure, I shut down Windows and then the UPS. I didn't shut down the line through which main power was coming to the UPS. When main power was back, I turned the UPS on. It was noising like it didn't get power from the main line. I checked the line and it was ok. Then I turned the UPS off. Still it was noising. Then I unplugged it from the main power source and removed from my PC. I smelled something is burnt. The UPS is always noising, it doesn't matter whether I turned it on or off. It happened 1 hour ago. There is a circuit breaker switch and an instruction: "Press to reset." But the switch cannot be pressed.
What happened to the UPS? How can I stop the noise it makes?

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