Mini update - still waiting for the screen - I don't think the replacement has even been shipped yet. Getting really anxious to get the screen.
I also had an issue last week with the behringer amp running the subs. I noticed after playing for a while at high levels the subs started cutting out periodically for about 10 seconds then would come back on. I checked the temperature of the amp and it was pretty hot above the heatsink. I did the fan mod to the amp so I thought maybe it was not pushing enough air. I tried swapping the original fan back and still had the same issue. I ordered another amp and received it Thursday. When I started up the new amp, the fan did not come on at all. I thought maybe it had been re-designed to only come on when it got hot, but after 2 hours and getting pretty hot, the fan still did not kick on. I left the amp connected this weekend and a few times starting it up, the fan kicked on, so it appears to be an intermittent problem. The new amp stayed cool much longer than the old one - even without any fan running at all, so I think something is wrong with the old one other than the fan.
Luckily I ordered from Amazon and they shipped out a replacement right away. The new amp should be here today.