I've been building an A4000T. In it are 4 4mb simms, an A3640, and, at the moment, nothing else. I've hooked up the disk and video daughterboards and the ports board (via straight-through 40-pin IDC ribbon cables), and installed the CPU card and ram. I'm trying to get it to come up to a kickstart screen, but no go. I get a blank screen (using an A520 to output to my tv) and no audio either, from either the speaker or the RCA outs on the video board. The A520 is getting power as far as I can tell, because it's syncing to my TV. I have tried this with the floppy drive from my a1200 as well as a few floppy drives from A2000s, and get the same, blank screen. Any suggestions?