Fix the telly? (3)

I believe the answer is:

set

I believe this is a double definition.

'fix' is the first definition.
('set' can be a synonym of 'fix')

'the telly?' is the second definition.
(telly is a kind of set)

(Other definitions for set that I've seen before include "Create a puzzle" , "Place - become rigid - adjust - group of tennis games - fixed - clique - fall beneath the horizon" , "Solidify like jelly" , "Determined or congealed" , "Scenery etc. for the stage" .)

I've seen this clue in the Evening Standard.

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