Go to pieces as top camera breaks (4,5)

I believe the answer is:

come apart

'go to pieces' is the definition.
(thesaurus)

'top camera breaks' is the wordplay.
'breaks' is an anagram indicator.
'top'+'camera'='topcamera'
'topcamera' with letters rearranged gives 'COME APART'.

'as' acts as a link.

I've seen this clue in The Telegraph.

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