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Reviews around sound (1.00 of 5)
CyberPower CP1500AVRLCD Intelligent LCD UPS System, 1500VA/900W, 12 Outlets, AVR, Mini-Tower
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On battery, it did make a loud buzzing sound
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made pretty loud rattling sound
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After trying to restart it twice, it made a loud clicking sound and started smoking
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It claims there is no power flowing to it and plays the whining, shrieking, irritating sound they choose for these units for some reason.
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