OK, first thing first, how do you know its fried? Did the lights come on again when you remove the two Engineering halves?
I am not sure if i can help you but from this picture:
http://s1072.photobucket.com/albums/w37 ... 32_408.jpg
The possible theory is that the electrical tapes could have gotten loose somewhere and the wiring could be touching the aluminum foils thus creating a short. I'm not there, and I could be wrong...
So, the next step is to get in touch with trekmodeler on this.