Returned ac adapter has a visible crack around damaged prong location.Not a manufacturing defect/issue.Communication log information states "using the pump for 7 months, pumping 5 times/day" and "admits that the ac adapter has gotten cracked at some point in time and has exposed components." no exposed components were visible on returned ac adapter.Faint odor of an electronic component failure/thermal event noticed.Returned ac adapter 120v housing was disassembled, very minor charring observed in location on top side of pcb, above area of damaged prong on the pcb.Charring is evident around damaged prong/pcb connection location where thermal event occurred.Communication log information states "using the pump for 7 months, pumping 5 times/day" and "admits that the ac adapter has gotten cracked at some point in time and has exposed components." unable to determine the fault of ac adapter failure/damage.Ac adapter was not tested citing safety concerns.
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