APC Smart-UPS Dead – Spiceworks

I have an APC Smart-UPS RT 3000VA. It has been disconnected from power for about 12 months. I have now reconnected the UPS and it is stone dead. No lights. No fans turn. I cannot find a Circuit breaher of a fuse which may have tripped or blown. I have left the UPS connected to power for 3 days now and still no life out if it. Can anyone shed some light on this?

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APC Smart-UPS Dead – Spiceworks was last modified: July 13th, 2017 by Jovan Stosic