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Discussion Starter · #1 ·
I began the changeover from track power to r/c battery a couple of years ago but I had kept the capability using a Trackside TE for my coach lighting. This last winter I had one of those brainstorms that, in retrospect, probably wasn't so brilliant! I figured that, if the TE would work on my largescale layout outdoors, why not try it out on the indoor O Scale layout. I figured that both used DC current so what could the problem be? Apparently, plenty.

First, once I had hooked up the TE unit it failed to function and I couldn't get it to link to the controller. Okay, that didn't work too well! Back to the drawing board. I then tried to re-hook the TE unit back to the Ultima unit that originally powered it and I immediately blew the fuse and the next and the next.... I checked and there were no shorts. It should have worked only it didn't! I'm afraid I might have done something to the unit by hooking it up to the Lionel transformer. Any ideas?
 

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Sometimes reversing the power or using AC accidently on a DC only unit not only blows the fuse, but causes the protection diode to short.

If the diode shorted, you may be in luck as replacing it will make the unit work once again.

All they do is place a diode across the input power source so it will short out the supply if power is reversed. This usualy causes the diode to short due to the instant heat generated form the overload to the diode.
 

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Discussion Starter · #14 ·
Update: The TE still works!! I was using an Ultima power pack that throws out 10 amps of power and I was blowing the fuses the instant I turned it on. I decided to try using an old HO transformer that has a throttle and maybe puts out 1 amp. Since it has directional control I had a 50/50 chance of getting it right. Sure enough, I got it wrong! The only thing that happened was that the little red light didn't come on so I slowly tried it the other way and voila'! it worked!! I sinc'd the handheld with the TE and lo and behold, everything now works! (I wonder why the Ultima was blowing the fuses?)
 
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