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Posted: 2021-06-2805:48 PM. Last Modified: 2024-03-2603:15 AM
Ups buzzing and not powering on
Hello,
My apc back ups pro 1000 Br1000g is making buzzing sound even when it is not plugged in ac power source. IT just beeps when I switch it on but there is no display and nothing happens after that. I tried removing battery and inserting it again, it started and after I switched it off, it made a beep sound and then started buzzing again. Now it is not powering on. Removing battery and inserting it again does help to start it.