An endless boring task to be a TV presenter (6)
I believe the answer is:
anchor
'tv presenter' is the definition.
(I've seen this before)
'an endless boring task to be a' is the wordplay.
'an endless' means to remove the last letter.
'boring task' becomes 'chore' (I've seen this before).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'be a' becomes 'an'.
'chore' with its final letter taken away is 'chor'.
'chor' put after 'an' is 'ANCHOR'.
(Other definitions for anchor that I've seen before include "One is often cast" , "Ship's holding device" , "I present" , "Holding device for ship" , "Secure (something) firmly in position" .)