Tiu with 5.0 remote is not connecting to TIU.

First, make sure that the TIU's RED LED is lit.

Next, make absolutely certain that the wire from the TIU's RED output terminal goes to the center rail and from the BLACK terminal to an outside rail. Having them reversed will yield exactly what you're seeing.

This and a whole lot more is all in MTH’s “The DCS Companion 3rd Edition", available for purchase from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

weird things....  everything was wired well.  I think my my aux transformer bit it.  it was plugged in TIU. no red light.   I pulled it out and let fixed 1 power it. it seems like its all ok now.  goofy things.  maybe the aux port when something is plugged in not working causes the TIU not to respond.  hmmm.     thanks for the advice!

Now, I got it all going,  the remote now looses control to engines.  Here is something strange too.  the variable channels are fixed, so I started out the one engine and it stopped, the lock on light turned off. 

  , now, reote (out of RF range) constantly out of no where.  changed batteries and still nothing.  lights on the TIU.  is the remote shot? all lock ons have power.    I have another.  do you have to program another remote to work with a certain TIU?  or can I just use it?  

never had so many issues.  this is an older TIU, no REV L. 

If aux port has plug installed it does disconnect Fixed 1.  What version?  Go back to older version of DCS like 4.20 or what ever you had and see if that resolves it.  G

Sounds to me like you're tiu is not putting out a good dcs signal and may have other issues.  Anyway ...  Is this your first layout? If not  how did things run on the old layout?  What's different?   Yes you can try another remote as long as the same numbered  tiu has been added to it.... It probably  has been.  .Did this happen after a software upgrade... I can't see an upgrade being the problem.

Almost forgot.... press the "read" bottom left on the remote.... Does the read find the tiu ? If not, how many times does the red led blink upon power up the tiu just using fixed 1 for now.. The  number of blinks is the actual tiu number and must be added to the remote. (most are tiu#1  a one blinker but stuff happens) maybe  check it out.

I have 2 tius.the other one I used in past was not upgraded. It ran everything fine for 3 years. Blew fixed 1 out.  But I bought a second tiu. Last year.  So, I just upgraded that one to 5.0.  I figured I'd use that for this

 Year.   I little bit ago, I plugged it all back in.  All lock on's lit.  Good sign.  I repondan 2 trains on fixed with no issues. As soon as I tried the one trolley on variable 1 (fixed).  It read the thing, started up, ran around and then. Power went out!  Lock on. Light out.  Then, the remote. Won't respond?  I can't get any of the running engines to respond to the remote.  No commands. Engines keep going. I had to pull plug to shut them off.    

You can go back to the other version?  Hmm.  You can get the other older version still?  Is it the older tius can't deal with the newer programming?    It seems the variable switched to fixed has an issue with 5.0. And an issue with the remote signal is now something.   If I could go back. I would!  

  It seems the variable switched to fixed has an issue with 5.0. And an issue with the remote signal is now something.   If I could go back. I would!  

I doubt it very much . We're using 4 tiu in super with all the var channels set to fixed mode.  The layout is single track and The train goes over all channels to go around the layout once. I haven't run that much since upgrading but  thought the trains actually responded quicker than version 4.3.

Is there a chance you have both tiu powered up? That would do it if they had the same address.... could it be the power supply? We had a case of the rollers being shot on a post war ZW. That one took a while to find the problem. fortunately the ZW has 4 handles ..easy fix.

We are kind of all over the map with symptoms.  You really have not provided all the information on the TIU.  What version is it?

Take this in logical order.  Take a TIU and power it via Fixed 1.  Does the red light come on and flash for TIU #?  Test it with an engine?  Does it work?  Keep fixed 1 powered and supply power to F2 and use it and do the same test.  Move to variable, etc

You state you think aux power is not working, so lets get through the TIU.  You can have a simple blown fuse?  Maybe a Var channel failed, etc...  G

FYI, there are no bugs in 5.0 as regards using variable channels in fixed mode.

ok,  I have power on fixed 1 only now.  my WALWART quit.  I wonder having that plugged into the port dead, and having the fixed 1 with power would affect the TIU?  Ao, well funny things happen.  I tried running all again.  this time I started the engines on the variable to fixed channels.  all good,  then ran the regular fixed channel ones, all good.  seems now the remote is reading better and responding. signal?  I don't have any metal lath or anything to complicate the signal. 

I didn't get the out of RF range this time.  so signal improved I suppose. 

GREGG I'm running only 1 TIU right now.  ( I have 2).  GGG  I don't know the version of it.  it says 2003 when you start remote.  I looked at my other TIU on the back and see no dates or numbers on it.   so how can you tell what version you do have?  its definitely not rev L.  both ones are serial ports. 

thanks for the suggestions:   I did do the read on the remote and it said found TIU.  so its reading now.  maybe the issue was the dead walwart in the aux port? 

Chris,

 I wonder having that plugged into the port dead, and having the fixed 1 with power would affect the TIU? 

If there's anything plugged into the Aux. Power port, regardless of whether or not it's providing power, the TIU will  not accept power from Fixed Channel #1 Input and there will be no DCS signal available on any channel output.

This and a whole lot more is all in MTH’s “The DCS Companion 3rd Edition", available for purchase from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at MTH's web store!

If you are running a Rev L TIU, dump the lights on your lockons.

Thanks guys for all advice.  It's all working fine. Inactive engines are working when put on tracks.  Remote connects perfect now.  My guess is the dead walwart plugged into the aux port and active power in the fixed 1.  Because with it off. It sorted itself out with no issues. Cross my fingers!

Yep. That one  has bit me   a few times in the past as well.  glad to hear it's working.