About a year and a half ago I discovered a hole “burned” through the bottom of my PowerBook G3 Firewire. It is located 2 1/2-inch forward of the left monitor output screw. The actual open hole is 1/4-inch diameter and a melted area a total of about 1/2-inch diameter. I have showed it to many people including some Mac repair folks and no one has a clue as to what may have caused it. Several have said that can’t imagine that the computer still works with that hole. It runs mostly fine, but I do have an intermintant Firewire problem. (FireWire devices work for about 20 minutes then stop communicating.). I had installed a 32GB HD but that is not near the hole. Any ideas?

About a year and a half ago I discovered a hole “burned” through the bottom of my PowerBook G3 Firewire. It is located 2 1/2-inch forward of the left monitor output screw. The actual open hole is 1/4-inch diameter and a melted area a total of about 1/2-inch diameter. I have showed it to many people including some Mac repair folks and no one has a clue as to what may have caused it. Several have said that can’t imagine that the computer still works with that hole. It runs mostly fine, but I do have an intermintant Firewire problem. (FireWire devices work for about 20 minutes then stop communicating.). I had installed a 32GB HD but that is not near the hole. Any ideas?