Loss of reputation when record tried out (9)
I believe the answer is:
discredit
'loss of reputation' is the definition.
(I've seen this before)
'record tried out' is the wordplay.
'record' becomes 'disc' (synonyms).
'out' is an anagram indicator (out can mean wrong or inaccurate).
'tried' anagrammed gives 'redit'.
'disc'+'redit'='DISCREDIT'
'when' acts as a link.
(Other definitions for discredit that I've seen before include "harm done to reputation" , "Scandal'" , "shame?" , "explode" , "Damage reputation of, cause to be disbelieved" .)