DCS failed.

dcs still made but out of most stock places tiu 50-1003 remote 50-1038!

Alan

Nicholas Smith Trains has TIUs and so does Mario’s trains (that I know of).

Not a lot to go on here. What makes you think it is shot? What does it do/not do? Which revision of TIU do you own? Depending on the version, it may be worth your while to repair it. 

Chris

LVHR

One man's "shot" is another man's treasure.   Many TIU failures can be repaired as Chris states, the solution isn't always to simply toss it and buy a new one.

Here's the scenario. Strange (to me). The TIU comes on but does not respond to commands from the MTH remote. MTH engines start up automatically without signal but do not respond to remote command.

Lionel engines do not start up automatically and respond to commands from Lionel remote normally, fed thru the TIU.

Baffled.

Might the MTH remote be the problem?

This is a Rev L TIU of some age. Might there be a way of repairing?

Who would like to examine it?

PS3 steam engines ??

PS2 and 3.

Sounds a lot like a loose tether problem between locomotive and tender 

Which rev do you have? Please post a picture of the bottom of the TIU.

When you power up the TIU, how many times does the red led flash?

How are you providing power to the TIU?

Did it work previously? Is the remote programed to connect with the TIU?

Chris

LVHR

Clem,

No loose tether. Diesels not responding. But why do Lionels work with Lionel remote?

Chris,

Rev L on bottom of TIU.

DCS and TMCC/Legacy work independently of each other. So if you have a Lionel command base, and you are running through a Fixed Voltage TIU channel, it will respond to the Lionel remote, regardless of what the DCS TIU is doing. The only exception to that rule is if a fuse is blown in the TIU. Then nothing works.

Presuming you have everything DCS configured properly, one or more of your signal generators could be bad. Or, depending on exactly how the TIU was constructed there could be a TVS or more that have shorted, driving the signal output down. There have been several highly technical threads about this issue and possible fixes on this forum. If you want to delve into some heavy duty electronics theory and practical application thereof, I invite you to read this thread

At this point, I will defer to Gunrunnerjohn or GGG. Either of them are highly competent and capable of repairing a Rev L TIU. BTW, Rev L TIUs are definitely worth repairing!

Chris

LVHR

Thank you for your attention and advice, Chris. GGG was kind enough to check out a proto3 board  I  fried so he might be williing to examine this TIU.

No problem.  Usually TIU can be repaired.  G

Thanks to GGG I'm back in play with MTH and TMCC. Thanks for all suggestions and support. Love this site.