RailPro > RailPro Specific Help & Discussion

LM-3S-G

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ronp:
Good Morning,

I’m having a problem with my controller recognizing a LM-3S-G receiver installed in a USAT GP-9.  The receiver had previously been installed in an F7 but I didn’t care for the sound file and engine match.  Otherwise it worked just fine.  So the receiver was removed.

Now with the receiver installed in a GP-9 it doesn’t recognize or connect to the controller. It isn’t seen under new products or pulled up with its old I.D.  It has power to the TRK connectors and power out of the common (wired to the board numbers), but no recognition of the controller.

Hopefully you may have a solution.

Ron

William Brillinger:
Is it possible that it was shorted during the install and died when it received power?

I would remove it from the locomotive, connect it directly to the power and test.

If you still can't see it then I would contact Ring Engineering for assessment and repair.

G8B4Life:
I second to take it out and hook the bare LM up directly to power and test again, just to remove all the variables.

How are you powering the LM and what's the power supply capability (volts and amps)? If these are less than what the LM-3S-G can handle then a short is less likely (but not nil) the fault candidate.

You mentioned that you had power from the common terminal to the number board lights (I presume these are lighting up?). How have you got that wired, ie where have you got the negative wired to? I do note that the wiring diagram in the LM-3S-G instructions has all the (function) lighting using one of the +5v terminals, not the common terminal. I don't know why that is but it's a variable that is different to what you have done as well.

My guess as to why you see power on the common terminal is it's straight off the internal bridge rectifier, which is working fine.

As a note, if you have the LM already in the controller then it won't ever show up as a new item, you'd have to delete it from the controller first.

- Tim

ronp:
Thank you both for the responses.  The power supply is battery--18.5V..6700mah.  I have several RailPro locos using this combo.  The GP-9 was a complete gut.  The motors, battery, are wired directly to the R/P thru their respective connections.  The board lites are LEDs illuminating normally that are wired with the black to the common and the red to the +5V.  I usually split the front and rear red wires between the two +5V connections.  I wire the board lites to the common so if the batt sw is on the lites are on.  With several battery powered locos it not too hard to walk away leaving one of the switches on.  The common works well in other locos and in fact worked with the first R/P receiver in this loco.  The rest of the lights are wired normally thru the button controlled wires at the opposite end of the receiver.

I've tried to delete the receiver thru the remove product remove path but I can't find the receiver.  It doesn't respond to the old I.D.

I have eight locos with R/P receivers.  With only the -9 powered I have tried all eight I.D.s.  Nothing connects.  I mentioned the common just to show that there is power to the receiver.  It seems the controller just doesn't see the receiver. 

All this said, I'm pretty much working at my limit.

I will remove receiver and test it thru another source.  I'll report the results.

Thanx again
Ron

KPack:
Another slim possibility is that there is a password that needs to be reset on the module.  Look up the procedure in the manual and follow it. 

I've seen it once before where a module somehow "acquired" a password, and then could not be found by the controller.  Just follow the reset procedure to rule that out as a possibility before contacting Ring.

-Kevin

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