The product problem occurred during complaint investigation and device operation in order to investigate an akita jet device complaint that was received on (b)(6) 2015 and documented with ra_040_2015.The akita device was returned by the distributor in the netherlands to vectura (b)(4).The reason for return was low pressure performance of the device.Inspection within the service department revealed that the device tested ok using our power supply on the test bench.The device was then tested with the original power supply and an inhalation therapy of 40 min was simulated.After about 3 min a crackling sound was noted, coming from the power supply and a strong smell was detected.Visual inspection indicated deformation to the power supply casing within an area of about 6mm.The power supply was then opened and the printed circuit board was observed.In the area of the transformer several electrical components were destroyed by overheating.The casing was still intact.There was no patient or user injured and there was no report of further damage, fire or electric shock.
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