I've been going over my schematic, comparing to the datasheets, my .brd file and the physical board with a continuity tester and so far I don't see any problems. I'm worried that I might have a problem because I bought the cheap eBay max7219's and now I have no clue how to diagnose it. I can post the schematic but since I used a bus on the outputs I don't think it will be very helpful.