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I recently purchased a Texas Special SD70ACe and prepped it for a run and I noticed that the cab light never goes off, whether it's in motion or not. Small problem, but I'd like it to perform like it should. I compared it to my first one to see if I was imagining or not and the cab light never goes off. Is there a way to fix it thru the Cab 2 or should I return it??  I appreciate all of your answers - MARSHELANGELO
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Hey, ,thanks for responding, I did try a reset several times to no avail, and yes they're about 2 yrs old.
Originally Posted by marshelangelo:

       
I recently purchased a Texas Special SD70ACe and prepped it for a run and I noticed that the cab light never goes off, whether it's in motion or not. Small problem, but I'd like it to perform like it should. I compared it to my first one to see if I was imagining or not and the cab light never goes off. Is there a way to fix it thru the Cab 2 or should I return it??  I appreciate all of your answers - MARSHELANGELO

This Legacy locomotive is an early one with modular boards.  After you press ENGINE # then set, you must follow that by ENGINE # Aux-1 then press #2 on your keypad.  The modular board locomotives need this extra step to reprogram the R4LC in the engine.  If you have not done that, give it a go.  If no luck, get back to us.  I have many of those early Legacy SD-70 locomotives and have run into one more issue that I will throw out.  I have seen several with the R4LC board not properly seated on the motherboard.  This will be an issue for you.  If you get to that point, when putting the body back down on the frame, spread the bottom of the body with your hands until you clear the R4LC board.  The ID of the body is the same as the OD of the R4LC board.

 

That engine goes back a few  years.  I also have that one and it is a fantastic runner.

Last edited by Marty Fitzhenry

Greg, before going to the steps below, please do the following.  In Legacy locomotives, two different ways exist to raise and lower engine volume.  When you reprogrammed the engine did the horn blow on each button push?

 

1.  After starting the engine, press AUX-1 then start pressing keypad button number1.

 

2.  After starting the engine, press the horn one time then start pressing keypad button 1.

 

On both methods, button 1 to raise sound and button 4 to lower sound.

 

If you have no luck, please review and try the steps listed below.

 

 

Greg, another issue with Legacy modular boards.  Pull and reseat the Railsounds power board.  That is the one without the chips.  That board goes bad often.  Legacy and TMCC share this as a common part.  If you have one from another engine to borrow, try it.  

 

Second, on the Railsounds audio board (one with chips) pull and reseat both chips.

 

Next change the volume put by turning it and see if anything changes.

 

Next, pull the R4LC board, power up the engine and with a blade, or anything metal, go to the volume pot and make contact from the center position on the pot to each other position.

 

If you are still not sounding off, follow the three wires from the volume pot to where they are joined by two more wires (speaker wires) into a 5 position Leoco plug.  Remove the plug from the motherboard and plug it back in firmly.

 

In the past I had the same  (no sound) issue with the Texas Special loco belonging to my friend Erol (aka Locolawyer).  It was the Railsounds power board.   On my own Texas Special the Leoco plug was loose in the motherboard plug.  I pulled each wire and soldered each to the motherboard.  I do not like to do a job twice.  My own engine I had no issue doing this.

Last edited by Marty Fitzhenry

Hey Marty, First and foremost I want to thank you for answering my text at such a late hour, Second of all providing me with this info so that I may use it. When you started talking about removing boards, I got kinda squeamish until I had to recall this is what I do for a living with computers. I took off the 2 sound boards and the R4LC board and reseated them. I put the train back on the track and thanks to you she's a 5 day old SD70 in my fleet who's ready to roll down the rails with all of the bells and whistles working. One thousand thank yous and tonight after I screw the case back on, I can go to sleep with a smile on my face - Yours truly, GREG MARSH aka MARSHELANGELO

Originally Posted by Ingeniero No1:
Originally Posted by MartyE:

Marty and Greg

 

Nice Job!

Yes, I agree!

 

To make it more user friendly for others, could you post the locomotive model number? I would like to look it up and see if any of mine are in the same family of locos as the one you just fixed.

 

Thanks -

 

Alex

6-34623 will get you in the ballpark.

Hey Alex, I went back to the site where I purchased the newest Sd70 and the # is 6-34623 or 34624.  Once everything worked out for me last night with Marty's guidance, the only remaining difficulty that I had was putting the train back together.  The boards, inside circuitry and overall fatigue at 2-3 AM made my first attempt a failure. By the time I put it back on the track, I could tell there was some internal interference taking place as the train began to operate. I'll put her back together this evening with better results I'm sure. Again, I thank you Marty for your help - MARSHELANGELO

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