Hi guys
I've been installing lights onto a TSU-1000AT that I put into a Walthers Dash-8 However, when I put the loco on the tracks, the lights, 2mm tower and SMD LEDs, were all on, shining brightly. I tried to turn them off by hitting their respective function keys but they still shone, forward or reverse. Is there a fix for this? Is it my own doing?
Which color wires do you have them connected to? If they are connected to a function wire other than white or yellow, they can be turned on and off with function keys instead of a headlight button.
You need to go to the SoundTraxx web site and download the technical reference manual for the TSU-1000 decoder to see which CV values allow the lights to be turned on and off if they are connected to some color other than white or yellow.
I'm not using a wired decoder and I am not a novice at installations. I have wired the decoder as per the following picture. When I tested the decoder, the front headlights and rear ditchlights would not turn off, no matter what function button I pressed or CV I programmed. I then rewited thee front headlight into the F5 pin, and that works correctly now, coming on with the front ditchlights after having mapped the F5 pin to the F0 function. However, i moved the rear ditchlights to the rear headlight's F0 pin but that started to stay on all the time too. I tried moving the positive comon for all rear lights to the positive for the front lights but this did not help. I tried resetting the decoder. This did not help. I tried every CV trick in the book. Did not help.
Since you're not a novice, have you checked the function mapping? Was the decoder new? Do you have motor control?
Richard
I have checked the function mapping and reset the decoded several times. The decoder was new and the only problems I'm having are with the lights.
I'd call Soundtraxx and send it back. There's not much else you can do--it's wired properly, the function mapping is good, your controller is good, everything else works, you've reset it a few times. Just a quick thought, is there any solder that could have bridged anywhere on the board?
It's a strange failure. Normally isolated failures are the motor control circuit , preamp, or one light function.
I'm thinking I'm going to have to send it back as well. And yes, I checked all over for stray solder and I found none. Thanks for your thoughts.
Train Modeler Just a quick thought, is there any solder that could have bridged anywhere on the board?
Just a quick thought, is there any solder that could have bridged anywhere on the board?
I was just going to suggest the same thing. If you don't visually see any solder bridges on the PCB, the short is most likely on an inner layer somewhere. Best to send it back so that Soundtraxx is aware of the issue - i.e. if there is one on this particular boards.
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
Functions always on is often a sign of a failed function output. It may seem strange that a failed device always has an output, but remembe rthe function lines themselves are the ground, a current sink, not a source - the blue wire is a positive common source.
So yes, send it back. If you even momentarily shorted the functions, they are probably blown. Or if you installed an LED and no resistor and the first LEDs then blew out - blowing the LED, or a bulb, often causes a surge enough to blow the function.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
I was going to say "Hurray!" as I would like to find the CV that leaves lights on as they were before loss of power. I like the way my NCE decoders don't "lose their mind" with power interruption.
IIRC, this is a Soundtraxx "thing" and there is no way to do this. Thought I'd ask.
Mike Lehman
Urbana, IL