The product component was returned for investigation and the reported failure mode was confirmed.The reported failure mode will be monitored for future re-occurrence.Alleged failure: unit (touchscreen) emitting smoke.Probable root cause: based on feedback communicated by rep, it is possible that the initial fluid ingress into the front of the panel caused a short which drastically increased current, resulting in damage to the traces and eventual failure.However, as no evidence of fluid ingress residue was observed following complete destructive disassembly of all components, this cannot be confirmed.It's also possible that given the service period of the touchscreen (originally released on 2011-09-29 as part of spy elite s/n: (b)(4), unit has surpassed the 50,000hr mtbf specified by the manufacturer and one or more power regulating smd components on the controller pcb failed.As touchscreen is an off-the-shelf component not manufactured or directly supported by novadaq/stryker, no further investigation is possible.As a precaution, emdr was submitted to fda regarding this incident on 2018-05-02 (pr# (b)(4).Touchscreen was replaced as part of scheduled field service.The device manufacturer date is not known.
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