(b)(4).The sample was received for evaluation.A visual exam was performed and no issues were observed.A rusch emerald fiber optic blade, reusable, was assembled onto the trued handle set.After multiple times of engaging the blade the led in the handle set would not energize.The circumstance of intermittent lighting operation lends itself to an electrical contact issue.After dissecting the battery cartridge and closely examining the small spring loaded contacts connected to the led itself, and the contact pad, the root cause cannot be assigned to a contact issue.The issue relates to a broken or interrupted circuit path, but the interruption could not be detected or recreated during this investigation.The complaint has been confirmed.Manufacturer will continue to monitor and trend related complaints.A conclusion code could not be found as the complaint was confirmed; however, a root cause could not be established.
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