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Bob Bufkin

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DCC Question
« on: October 28, 2008, 09:10:20 AM »
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Was checking out some of my old passenger equipment the other day.  The Atlas 10-6 with lighting.  The car lights worked but the 3 different locos I tried using didn't.  After removing the Atlas car, the locos worked fine (DCC equipped).  What could be causing this?
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wm3798

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Re: DCC Question
« Reply #1 on: October 28, 2008, 09:24:48 AM »
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That's weird...  The only thing I can figure is the car lighting is drawing a ton of amps... which isn't likely.  I have several lights that operate off of the track power, and a couple of lighted cabooses (LED) and they don't pose any problems to the track power...

I wonder if you installed a TF-4 function decoder in the lighted car (which would put control of the lighting into the DCC system) if that would help?

Lee
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SirTainly

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Re: DCC Question
« Reply #2 on: October 28, 2008, 10:36:53 AM »
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Just an off the wall idea, the lighted car might be being detected by the DCC command station as a short ?

How is the lighting in the car done, bulbs or LEDs ?
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wm3798

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Re: DCC Question
« Reply #3 on: October 28, 2008, 04:59:18 PM »
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If it was detecting the lighted car as a short, wouldn't it kill the track power preventing it from lighting up?
Lee
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davefoxx

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Re: DCC Question
« Reply #4 on: October 28, 2008, 05:46:10 PM »
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Quote from: wm3798 on October 28, 2008, 04:59:18 PM
If it was detecting the lighted car as a short, wouldn't it kill the track power preventing it from lighting up?
Lee

It depends.  You know that coin trick that is suggested to test if you have enough feeders to get a good signal over your entire layout?

Dave
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wm3798

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Re: DCC Question
« Reply #5 on: October 31, 2008, 11:07:40 PM »
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Well, unless Bob's made considerable progress on his layout, I think he's using a test loop of Unitrak....  I don't think he's got any remote track getting bad signal...  But you're right, that could be an issue under other circumstances.
L
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Bob Bufkin

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Re: DCC Question
« Reply #6 on: November 01, 2008, 06:38:54 AM »
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Problem solved.  I just yanked the lights out.  I actually have a one track main line with some sidings completed although its not permanently in place yet.
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bsoplinger

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Re: DCC Question
« Reply #7 on: November 11, 2008, 03:10:42 PM »
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My guess on your problem, although you solved it by removing the lighting, is that their might be a capacitor in the setup which actually bridges the 2 sides of the circuit. A number of locos have these to help deal with RC interference they can cause and perhaps the lights in the car have something similar.
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