A user facility biomedical technician (biomed) reported that an aquabplus 2500 had no display and would not power on in the morning.
The machine had been in standby mode prior to this failure occurring.
There were no machine alarms to report.
While inspecting the machine, the biomed identified blown fuses on the stage 1 power supply board.
The biomed replaced two 3.
15a fuses from the power supply board.
After doing so, when the motor protection switch (mps) was turned on, sparks were noticed coming from the power supply board.
The biomed then tried switching the power supply from stage 2 to stage 1, but this did not resolve the issue.
As a result, the power supply board from stage 1 was replaced.
The biomed did not notice any visible burn damage on the power supply board.
However, they did notice a burning smell.
There was no evidence of any smoke or flames.
It was confirmed that the thermal overload was not tripping.
In addition, there were no local power grid issues at the time of the event.
No patients were in treatment when this occurred, and therefore there was no patient injury or harm.
The machine was confirmed to be fully operational at the time of follow-up.
The ftp files were provided for review and the power supply board was reportedly available to be returned for evaluation.
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