Positions the TV one's brought back (5)
I believe the answer is:
sites
'positions' is the definition.
(site is a kind of position)
'the tv one's brought back' is the wordplay.
'the tv' becomes 'set' (I've seen this in other clues).
'one's' becomes 'is' (Roman numeral).
'brought back' is a reversal indicator.
'set'+'is'='setis'
'setis' reversed gives 'SITES'.
(Other definitions for sites that I've seen before include "Is set (anag)" , "Locates" , "places" , "Locations or positions, as for building" , "internet locations" .)