I used to have this accel card. When times it didnt work was because it wasnt seated in fully or it was seated in, but not aligned right, least then a colored screen would come up. Dont think it would be the Amiga itself. The card is either shot or the actual CPU isnt working.... They did get hot. Probably should try getting another 68030 of the same speed and see what that will do for you.
:-)
