Person hired to plug in TV with rear side damaged (10)
I believe the answer is:
advertiser
'person' is the definition.
(advertiser is a kind of person)
'tv with rear side damaged' is the wordplay.
'with' means one lot of letters go next to another.
'damaged' indicates an anagram.
'rear'+'side'='rearside'
'tv' put after 'rearside' is 'rearsidetv'.
'rearsidetv' is an anagram of 'ADVERTISER'.
'hired to plug in' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for advertiser that I've seen before include "He promotes" , "Publicist" , "Commercial producer" , "One who can use multiple media" , "One publicising a product (S, not Z)" .)