Ouch. Something didnt get plugged in correctly, or 1-tooth-off. They usually dont blow for no reason. 

That looks like it was part of the video capture subsystem which is probably screwed now. So i would leave it all out, and just put a known good graphics video card in it and give it another shot. 

If that doesnt work, then theres a good likelyhood the nubus controller or one of the buffer transceiver ICs on the databus is dead. Lets hope not, because it looks like that logic board uses all custom ICs for these jobs unlike the older stuff.