Crossword Genius

Audiovisual connector problem causing lasting sign of damage (4,6)

Ross

I believe the answer is:

scar tissue

I'm a little stuck... Click here to teach me more about this clue!

'lasting sign of damage' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'audiovisual connector problem' is the wordplay.
'audiovisual connector' becomes 'scart' (I can't justify this - if you can you should give a lot more credence to this answer).
'problem' becomes 'issue' (issue can mean a problem or difficulty).
'scart'+'issue'='SCAR TISSUE'

'causing' is the link.

Can you help me to learn more?

I've seen this clue in The Independent.
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