RailPro > RailPro Specific Help & Discussion
Speaker Wiring
faithie999:
--- Quote from: Stephen K on March 26, 2020, 06:58:34 PM ---yup, that seems to be the case. Sure was an adventure getting there though. Again thank you everyone for all your assistance. Any suggestions where to look for appropriate LED's?
--- End quote ---
I am using SMD LED's so I have a couple of spare "normal" LED's that I had bought and won't be using. send me an email with your address and I'll drop a couple in the mail today.
faithie999 at hotmail
I think Alan might have linked you to an ebay seller to pick up some 1K ohm resistors. there are US sellers of resistors so you won't have to wait for the china shipping delay. I have bought lots of 5 for just a couple of dollars/free shipping.
ken
Alan:
Paul Falstad's circuit simulator is a really cool site. Thanks for the link.
RailPro users, want to see what is going on inside all those wires inside your loco, check out the site.
Stephen K:
I don't know what to think. While waiting for new LED's to arrive for loco #1 I decided to work on loco #2. Got it all connected and put it on the test track. Motor, horn, and bell work fine. Lights flashed on and instantly burned out. Front and rear are on separate buttons and each burned out on it's own. Now I'm second guessing the problem on Loco #1. I'm thinking now the lights were fine until I touched the button and poof, dead. I've rechecked all my wiring against the wiring diagram and can not see anything wrong. But seems apparent SOMETHING is wrong. Is it not appropriate to collect all commons into one connection on the blue lead?
Lights on loco #2 are standard rice grain lights, not LED. 2 up front and 2 at rear. Athearn notes on their exploded diagram that when adapting to DCC resistors should not be necessary. Are they just wrong? Is something different the RailPro that requires resistors on every light? Is there some trick to connecting the blue common? It just doesn't seem like it should be this difficult...
Alan:
Resistors are not required if the bulbs are 12-15v bulbs. There are 6v and 1.5v versions of the same bulbs. Is it possible someone installed lower voltage bulbs? Did the bulbs have resistors when you took it apart?
Stephen K:
revelation... With that tip I looked closer. This loco was previously set up with Soundtraxx Econami DCC and sugar cube speakers. Fortunately the Soundtraxx packaging card with wiring diagram was in the box with the Loco. Upon closer inspection I see now that the lights were wired to a terminal that was designated for 1.5 volt lights. So that seems to answer that question for Loco #2. Time for more new lights.
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