Topic: Is my Super Nintendo (snes) ruined?

While taking the case apart to clean I tried a melted pen trick to try and undo the screws without the proper tool. (it didn't work). I bought the proper tool but one bolt still and melted plastic in it. I used a drill to get it out and slipped and drilled a hole through the plastic. When I took it apart, I noticed a small score mark in the bottom side of the motherboard (brown side) I clean it and put it back together and now it does not work. Its not the power supply or the fuse and the led light will not light. Any input would be great.

Pictures would help but to be honest that doesn't sound good!