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TV, at home, can become chronic! (3,2)

Ross

I believe the answer is:

set in

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'become chronic' is the definition.
I can't tell whether this defines the answer.

'tv at home' is the wordplay.
'tv' becomes 'set' (television set).
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'set'+'in'='SET-IN'

'can' acts as a link.

Can you help me to learn more?

(Another definition for set in that I've seen is " Become established".)

I've seen this clue in the Evening Standard.
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