Help with an open circuit Quintet Black

Due to mis-handling of a nuded  Quintet Black, it is now open circuit in one channel.  It has only about 30-50 hours up. There is an exchange programme that will give me 25% off a replace-wth-like-for-like . I’d rather get this one repaired if it is at all viable.  No, I will not put in an insurance claim on this. 
Ok, who does this sort of micro surgery?
I’m looking at my options, and would stretch to a new Rega Ania, if push comes to shove , and it’s just too expensive. The Quintet black , like my (sold in a bout of stupidity)  DV20X2 , is the sweet point for me.