Engineers manage a repeat broadcast (5)
I believe the answer is:
rerun
'a repeat broadcast' is the definition.
'rerun' can be an answer for 'broadcast' (rerun is a kind of broadcast). I'm not certain of the 'a repeat' bit.
'engineers manage' is the wordplay.
'engineers' becomes 're' (abbreviation for Royal Engineers).
'manage' becomes 'run' (both can mean to organise).
're'+'run'='RERUN'
Can you help me to learn more?
(Other definitions for rerun that I've seen before include "Repeat of event" , "Repeat series" , "Show again on TV" , "Performed or broadcast again" , "Put on again" .)