A dramatic scene - the board get gold! (7)
I believe the answer is:
tableau
'a dramatic scene' is the definition.
(I've seen this before)
'the board get gold' is the wordplay.
'the board' becomes 'table' ('table' can be a synonym of 'board').
'get' means one lot of letters go next to another.
'gold' becomes 'au' (Au is the chemical symbol for gold).
'table'+'au'='TABLEAU'
(Other definitions for tableau that I've seen before include "Pageant" , "Scene represented by motionless figures" , "Picture of group or scene" , "Staged scene" , "Motionless group on stage" .)