I'd say if others are experiencing the same issues and there is no easy fix (do a search for baking HP printer motherboards at 350Deg for 12 minutes or fixing a

I'd say if others are experiencing the same issues and there is no easy fix (do a search for baking HP printer motherboards at 350Deg for 12 minutes or fixing a Brother printer error with scotch tape) then it is toast. It sounds like a production flaw and you will just be wasting your time.