Question about Compaq 500 UPS Pro ( 300W / 120V / NA ) (155373001) UPS System
Maybe the battery, but I think you have a serious over and under voltage issue that causing the AVR to click on and off again.
May I suggest a PMM117 power guard as a tool to monitor the power. If the voltage drops, current rises, it switchs of the power....once. Not like on and off/ on and off/ you loose 50 watts everytime that happens.
Otherwise a $30.00 battery plus shipping I can help you with.
Posted on Sep 08, 2009
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Posted on Jan 02, 2017
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