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Last year all 4 channels of the TIU worked perfectly.  I hooked it up this year and NO POWER is going thru any of the 4 channels.  I checked the INPUT side and power gets there on all 4 ports but that's it.

When I put it away last year it was working perfectly but this year all 4 channels are problems. 

At first, on the first port that I checked, that maybe the internal fuse was bad.  But since NONE of the channels have power going thru them, I ruled that out.  I mean, what's the odds that all 4 fuses would go bad just sitting in storage (dry).

I did a READ and it finds the TIU and both of the AIUs.

please offer a suggestion because I am out of things to try.  Again, to me, it worked when I put it away and that's important to know.

As always, thanks - walt

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The only thing that can kill the FIXED channel power from coming through is either hitting the E-STOP key to pick the relay or blowing the fuse.

  • Remove ALL power from the TIU, aux power and all power to all inputs.
  • Restore power to the TIU input channels and aux power if you use it.
  • If there is no power on the FIXED outputs at this time, either the fuses are blown or the TIU has an internal problem.

Thanks John

Some comments from me. Considering I turn my TIU off every time when I’m not running trains to me that’s the same as disconnecting power.

I do use AUX power. Like I said when I do read it finds the TIU and both AIUs

Is there anything I can look at. Saying there is an internal problem is is helpful but I don’t know what to look at.  Any ideas at all. Have you ever heard of this.

what’s confusing to me is it works perfectly when I put it away

as always thanks. Walt

So the LED is on and has blinked the address of the unit.  As John stated fuses for Fixed, and the Var need to be turned on to fixed or set up as tracks and have the voltage raised.  Internally you could have loose nuts on the terminals on output side.

Weird all channels bad and I would make sure you are getting a good connection on the output side.  Using a voltmeter touching metal of the output terminals?  G

The light comes on. I do a raid it finds the TIU in both our our use.

The light comes on. I do a read it finds the TIU and both AIUs

I used my voltmeter to check input side versus output side

It’s odd that it’s all four channels. I could understand one having a bad connection or a bad fuse but not all four. Especially considering it worked when I put it away

It’s odd that it’s all four channels. I could understand one having a bad connection or a bad fuse but not all four. Especially considering it worked when I put it away

Thanks for answering

This is totally embarrassing. I wish I could say I did this or I did that and all of a sudden it worked but I didn’t do anything except go down and watch the Penn State football game. I came back up and turned it on and now power goes through all for channels.

I apologize for wasting everyone’s time. Like I said I didn’t do a single thing but turn it back on and it worked. I turned it on and off in the morning but that didn’t help.

So I guess all I can say is I’m glad it’s working

again I have to say it I’m very sorry I wasted your time

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