OK, I went back and double checked just to be sure and...
Applicable Model Service Numbers : 981XXXX, 982XXXX, 983XXX
Soldering crack occured by accident to IC305 on the Main Board.
Remove the IC socket of IC305 carefully and solder the IC305 directly on the Main Board.
other than that problematic IC socket and a fan that goes noisey every once in a while you got yourself a pretty dependable little mixer there...