The incident was reported to devilbiss healthcare's (b)(4) distributor of the device who stated there was "damage to the connection of the (j8) ac voltage power connector to printed circuit board (pcb)".The (b)(4) distributor noted that the (j8) ac voltage power connector was arcing and that it was cold soldered to the printed circuit board (pcb) board.The (b)(4) distributor reported there appeared to be damage to the solder joint and the damage was more than likely caused by excessive force or mechanical stress applied to the connector.The unit was returned to devilbiss healthcare and an engineering inspection and evaluation was performed, which confirmed that the cpap unit had a cold solder joint between the printed circuit board (pcb) and the (j8) ac voltage power connector.The cold solder joint was the result of improper welding technique during the electronic assembly process of the printed circuit board (pcb).This is localized to the position on the board and internal to the device.Devilbiss healthcare has notified the printed circuit board (pcb) manufacturer.
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