One intelect mobile 2-channel stim international standard unit was returned for evaluation.The power supply unit (psu) was noted to have been held by one screw instead of two as normal.This is indicative of insufficient electrical installation by the end user site.The psu was shifted on one side.The burn started by the 230 volt input.An internal metal structural component was found to have rusted.There is white residue in conjunction with the rust, which indicates water ingress had occurred.It is most likely that water entered the unit, causing a short-circuit.
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