Put dial back (4)
I believe the answer is:
laid
'put' is the definition.
(I've seen this before)
'dial back' is the wordplay.
'back' says the letters should be written in reverse.
'dial' reversed gives 'LAID'.
(Other definitions for laid that I've seen before include "Doze" , "settled" , "Prepared (a trap)" , "Deposited" , "Wagered" .)