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IBM OP500 Uninterruptable Power Supply

Help! My UPS has been sitting there hidden away for years. I recently found that it no longer worked - didn't seem to hold a charge. I thought the best bet was a worn-out battery so I replaced it. It still dosen't seem to be working. When I unplug it trying to test the battery back-up, everything dies. Currently, there is a yellow light blinking which has a picture of a battery with a slash through it. The first thing I would like to do is find the operating instructions and make sure I'm operating it correctly. They should be no more than a page or two. Thanks

Posted by John Kight on


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Http:// that is the link to the manual you need. It sounds like your UPS is not turned on correctly. You must press and hold the on switch. Make sure the AC sign wave is lit solid not blinking, the battery should not be lit as well. If the battery is yellow, that means you are running on battery, if it is red that means the battery is low.

Posted on Jan 25, 2007

  • bambus011 Oct 20, 2010

    Hi DURock,
    I don't think that you are talking about the same product. The on/off switch goes left and right and can not be pressed.




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on Dec 02, 2009 • Computers & Internet

Started Flickering and strobing

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IBM-OP500 Battery back-up

Have you tried pressing and holding the off\on switch to make sure it toggles to "normal" rather than "charge"?
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