Question about Liebert PowerSure ProActive PSA700 UPS System

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Liebert psa 700-230 ups won't power up.

When I switch it on it klicks, no leds, no life at all, all fuses ok, battery ok. no out put at outlets.

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  • 72tr6r Nov 30, 2008


    Hi love4ce,
    thanks very much for your answer on the UPS problem, where would I find the power transistors?
    Could you perhaps send me a diagram of the things to check on, seanmcnulty@bigpond.com much appreciated if you could,
    Sean Mcnulty.

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Chek the power transistors.

Posted on Nov 29, 2008

  • Yasser Mahmood
    Yasser Mahmood Dec 02, 2008

    the power transistors are the parts that fixed on the aluminum, but first if ther is no beebs or led light at all, check any logical IC if the are a 5volt dc , if not then you can chek the regulator.

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Hi
Most of what I found on this subject was not helpful, but here:
http://www.emersonnetworkpower.com/documentation/en-us/brands/liebert/documents/discontinued%20product%20documents/sl-23270qs.pdf
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