:-( Well, if you get the red screen with the ROMs out, and a black screen with the ROMs in, then they are probably okay. If you get a black screen all of the time, the trouble may be with the video chips, or circuits related to the video chips.
:-? Can you see or smell any burned circuits or components?
;-) Try hooking up the RCA video out and seeing whether you get a signal there. Other than that, in your place I'd move each component , in turn, to a known good system and determine which ones were ruined that way.
