Ordered and sent back, the thing conked out (6)
I believe the answer is:
tidied
'ordered' is the definition.
(tidying is a kind of ordering)
'sent back the thing conked out' is the wordplay.
'sent back' is a reversal indicator.
'the thing' becomes 'it'.
'conked out' becomes 'died' ('die' can be a synonym of 'conk out').
'it' backwards is 'ti'.
'ti'+'died'='TIDIED'
'and' is the link.
(Other definitions for tidied that I've seen before include "Made neat and trim" , "Put things in order" , "Got spruce" , "Made neat and orderly" , "Cleared away" .)