Details of complaint: the biomedical engineer (bme) reported that the uninterruptable power supply (ups) used with the eeg-1260a system sparked and was smoking.The device was not in patient use.Investigation summary: as the reported device was not returned for evaluation, the reported issue could not be duplicated nor confirmed.As such, a root cause cannot be determined.Possible causes for smoking and sparking with a ups are, 1.Overload: if the connected devices draw more power than the ups can handle, it may overload the system, causing overheating and potential damage.2.Short circuit: a short circuit within the ups or in the connected devices can lead to excessive current flow, resulting in smoke and sparks.3.Internal faults: internal components of the ups, such as capacitors, transistors, or other electronic parts, may fail due to manufacturing defects or wear and tear over time.4.Faulty batteries: ups units often have batteries to provide power during outages.If these batteries are old, damaged, or malfunctioning, they can cause issues, including sparking and smoking.5.Power surge: a sudden and severe increase in voltage, either from the utility grid or a lightning strike, can overwhelm the ups and cause damage.6.Poor ventilation: inadequate cooling or ventilation can lead to overheating of the ups components, potentially causing smoke and sparks.Additional device information: d10: concomitant medical device: the following device was used in conjunction with the eeg system and is the device that malfunctioned.Nihon kohden is not the manufacturer of the ups.The manufacturer date information is listed as no information (ni).The udi information is listed as no information (ni) as it does not have a udi number.Ups (manufactured by powervar): model: abce422-11med.Sn: (b)(6).Device manufacture date: ni.Unique identifier (udi) #: na.Returned to nihon kohden: na.
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