Find a Mithril Casing and return to A-Me 01 in Un'Goro Crater.
A little further investigation shows a panel that slides open. Clearly written above some wiring is the statement, "Replace Mithril Casing And Turn Power Off Then On."
Taking a moment to replace the panel, you wonder if it'll be that simple to fix A-Me 01 and get her back to Karna Remtravel near Marshall's Refuge.
Only trying it will tell.