Hello there folks, I have the Denon X1800, if the mixer is shut off let’s say a couple of hours the engine connect works when I start up one SC5000. As soon as I turn on the other SC5000, the engine connect light goes off and disconnects. If I turn the other player off it comes back on, on the first SC5000 that I turned on. That deck is plugged into Ethernet port 3. Eventually the engine connect button starts to flicker on and off, the on air mode goes off and engine connect doesn’t come back on. The players see each other, the LAN port lights are lit up but no engine connect. I suspect a faulty Network Card. Sounds like it needs to be serviced. Mixer is just over a year old and out of warranty I believe but before I decide on spending a large some of money to have it serviced, I just wanted to see if any other X1800 owners may have run into the same problem. Thanks for any help.