@Kenjr posted:I haven't seen any responses from experts like gunrunner, but this could be some of your TIUs loosing signal strength. Rev L TIUs seem to experience this problem. There is a circuit board kit that allows you to check output of tiu channels. I think rtr12 sold the kit.
The bottom line is this is such a convoluted mess that I can't imagine any truly useful contributions or I would have spoken up. I'm pretty sure this is one that it would be far easier to diagnose in person than in ASCII. I don't know how other people work, but something like this I'm all over in person as seeing and touching things makes a world of difference.
I just read this and figure I probably wouldn't be contributing enough useful information to make a difference. 
@phil gresho posted:1. My control system has been corrupted....for reasons unknown. I can no longer add a new engine...either DCS or TMCC. The remotes tells me that the new engine has been added; thus lying to me! Some (not all) engines that previously ran well no longer respond. Those that do respond behave properly, except for the frequent need to repeat commands (OUT OF RF RANGE)
2. I have a large, complex, "3-D" layout: 5 TIU's (super mode) and 9 AIU's.
Since the bad behavior occurs for all 5 of my MTH remotes, the problem seems to be in 1 or more TIU's. HELP !
My only idea would be to test the components individually on the bench, TIU by TIU. And I'd also disconnect all the AIU's until I resolved the issues. I have about 500 feet of track and run it using one TIU. This layout must be huge to require five TIU's.
