Another adjustment on TV (5)
I believe the answer is:
reset
'another adjustment' is the definition.
(a different arrangement or setting)
'on tv' is the wordplay.
'on' becomes 're' ('on' can be mean 'with reference to').
'tv' becomes 'set' (a television set).
're'+'set'='RESET'
(Other definitions for reset that I've seen before include "Steer so as to fix broken bone" , "Restore to original state" , "Put together again" , "Replace, resettle or put back again" , "Trees (anag)" .)