ups not switching to backup mode

Discussion in 'General Electronics Chat' started by abichebl, Mar 12, 2013.

  1. abichebl

    Thread Starter New Member

    Mar 12, 2013
    1
    0
    when the electricity goes off the ups bon't switch to battery to convert power and the relay is fine and the battey is new but i think there is a transistor or something is not working while there is nothing burned thanks for any assistance
     
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