An idea for destroying it:
Have some classic cracks through the glass intersecting in one point, perhaps with something sticking out of/in it. have a few adjacent chunks fall of completely and the (fried) circuits we'll show through.
https://img217.imageshack.us/img217/3844/tempnq2.th.png
Haven't figured out what to do with the frame yet...
Hope it helps,
Benny