Perhaps Band Aid record brought back tears when broadcast (7)
I believe the answer is:
plaster
'perhaps band aid' is the definition.
(Band-Aid is a plaster trademark)
'record brought back tears when broadcast' is the wordplay.
'record' becomes 'lp' (abbreviation for long play record).
'brought back' says the letters should be written backwards.
'when broadcast' is an anagram indicator (broadcast can mean disperse or spread).
'lp' back-to-front is 'pl'.
'tears' is an anagram of 'aster'.
'pl'+'aster'='PLASTER'
(Other definitions for plaster that I've seen before include "Cover for cut" , "Smooth covering for walls and ceilings" , "First-aid item" , "A paste; a dressing" , "Sticky bandage" .)