Something is wrong with OOPS.

Hello everyone. Help, there is such a thing, oops (if it is not clear what it is, I will explain that this is a power supply through which current flows to the computer, and also charges itself in the event of a power outage, consumes what it has accumulated, gives time to be saved) stopped working. The plug was accidentally pulled out, I reconnected it, but oops started showing red light now does not turn on. Help me please.