I’m very sad to say my DM4800 is dead, most likely to a circuit board failure. I very recently added the 2Seemy video card output so it would be future-proof against display problems. It also has 2 analog IO cards and 1 ADAT IO card. I’ve accepted the fact that it’s too old to invest any more into it. If anyone is interested in having it for parts, please contact me and we can discuss a price that’s fair. I’m in the Bay Area in CA.