I had a SuperDrive fail in a similar model Mac mini. I bought a replacement mechanism off eBay (the original Pioneer model had been discontinued) and fitted it myself, while I did not need the MacFixit instructions myself, those make such an operation straight forward.
The part I bought off eBay was Apple labeled but most slot-loading mechanisms should fit.
Ed Lawrence1 wrote:
Thanks John i'll look on ebay
It won't be difficult, Ed:
I have the same mini, and followed this to replace my optical drive:
One tip: as getting the top case off is such a wrench, run it with the top OFF for a few days afterwards, to make sure everything has been put back OK.