Harry's live on TV (5)
I believe the answer is:
beset
'harry's' is the definition.
('beset' can be a synonym of 'harry')
'live on tv' is the wordplay.
'live' becomes 'be' ('be' can be a synonym of 'live').
'on' is a charade indicator (letters next to each other).
'tv' becomes 'set' (I've seen this in other clues).
'be'+'set'='BESET'
(Other definitions for beset that I've seen before include "dog" , "Encircled, attacked" , "Hemmed in or surrounded" , "Attacked from all sides" , "Assail or attack on all sides" .)