'04 Itasca Horizon, annunciator panel problems, help please.

[FIRE UP]

Gents,
Well, I hate issues like this. I can fix things like hydraulic leaks, broken welds, seal problems etc. but, this thing I HAVE NO CLUE! What's happened(ing) is, the "Annunciator panel" that is, the icon bar with all the different colored warning messages on the dash is remaining "On" all the time. Along with that is the fact that the "Interactive Graphical Information Center" is completely blank and, NONE of the gauges work!

Now, this is all new. We finished a month long maiden voyage, about 2500 miles, about a month ago. That coach performed flawlessly. No issues what so ever. All that was a problem, both before and after we left and returned was a leaking ram in the bedroom slide which, since has been repaired.

Well, I got into the coach today, it's been sitting for about a month since we came back, and went to start her up and you could hear the little background "clicks", snaps, and noises that the coach goes through in the "Ignition on, wait to start light on" pre-start condition. Well, it starts just fine and, because I have no gauges what so ever, I immediately went out and checked the charge on the starting batteries for charge. They were getting a perfect 13.8V at the time, as well as the house batteries.

Well, in searching the net, my son and I came upon some past posts with similar issues but, not the same exact problem. The answer to theirs was the "MMDC" controller that sends the signal to the annunciator panel. It apparently has some cold solder issues as well as connector issues from the plug to the MMDC itself. Well, I removed the MMDC and checked the potential "Bad solder" joints and they appear to be just fine. I sprayed the contacts for the 10 pin connector with contact cleaner and then lubed them up a tad with some dielectric grease. NO HELP.

It still stays on. There's no alarm about low air, no buzzer for when you left the parking brake on and put it in gear, nothing. So, anyone had this problem on or in a similar coach? As stated, all was well before we parked it for a month. I'd sure appreciate what you can send me. And yes, if someone doesn't come through with what could be the answer, I'll be on the phone with Freightliner help in the morning. I thought I'd give you folks a try first. If you click on the link below, you'll see what I'm talking about, if you're not sure. Also as stated, the "Information Center" is also blank too.
Scott
http://www.rvtechlibrary.com/electro...mdc_owners.pdf