Question about APC Back-UPS CS 500VA UPS System

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If it still does not work, your inverter is toast. You need to replace it. You wated too long to change out the batteries and your toasted your inverter. That happens a lot.

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Posted on Sep 06, 2009

  • StorminP
    StorminP Sep 09, 2009

    That may be true regarding the fuse, but likelihood of damage to the inverter is very likely. If you cook the inverter. Your are done.


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The is a fairly large fuse that connect between MOST APC 24V system.

If there is TWO batteries inside your system them check the fuse in between the two batteries.

The is a safety loop back plus on larger APC unit. If it's missing it will not power up.

Posted on Jul 15, 2009


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SOURCE: how to repair UPS

my ups got sound is what proplem

Posted on Sep 08, 2009

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