*Warning* I make a few mistakes on this one but eventually figure it out.

00:00 Looking at Boards
06:29 Power up on bench
07:18 Testing ROM with Fluke
09:10 Testing RAM
14:35 Logic Comparator on 7404
18:38 BIG, BIG Mistake
24:30 Triple checking work
29:40 Discover Mistake
32:10 Fluke Results Understood
42:00 New RAM and Test