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I hope I’m posting this in the correct forum. I saw an old post where you helped a member with the same problem.  I have a PS1 engine that doesn’t run (it just makes a horrible sound like radio static) and I want to upgrade a it to PS3. I need to know where to cut the traces on the circuit board of my smoke unit, but my board isn’t shown in the PS3 upgrade instructions, nor is it the board pictured in the post I read earlier.  I have a PS1 RailKing Allegheny, the box shows 20-1117LP, but the catalog # is 30-1117LP.  I've attached pictures of the smoke unit and engine. I've been away from the hobby for quite some time and I'm in the process of making room for a layout so I won't be doing the upgrade immediately, I'm just trying to get the process established in my mind before attempting the upgrade.  After reading some of the preceding posts, hopefully I’ll still be able to get a PS3 upgrade kit when I’m ready to do the job. Any assistance will be greatly appreciated.

Thank You,



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You're in luck.  Since you don't need any of the PCB stuff for PS/3, just remove that bottom board and pitch all of it.

On the top board, remove the stack funnel, and just cut any traces leaving from the two resistor pads on each side.  Remove all the wires.  If you plan on using the existing headlight socket, it has to be totally floated, both wires, no frame connection.

If ou post a picture of the top of this board after you've removed the funnel, I'll indicate the traces to cut and what to jumper.


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  • mceclip0

Hi John,

Here’s the photo of the board minus the funnel, as requested.
I’m not good at electronics, so I’ve attached the following picture in the hope that you can tell me what it is. C5CB1B26-81CA-40D9-B4D3-535A74BC26B9
I found the brown cylindrical “thing” (I told you I wasn’t good with electronics) on the right side of the photo laying in the shell of the Allegheny when I took it apart. Could this be the reason that the engine stopped working? It looks like it’s a perfect fit for the spot labeled C1 on the board. I still want to do the upgrade regardless of what it is, I’m just curious. Also, regarding the headlight, I was going to use the existing bracket, but won’t the grommet and wire harness that’s supplied with the upgrade kit be enough to isolate the headlight?  Thanks again John.


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You don't have to remove the components, just all the wires.  The components obviously aren't in the way now, so why make extra work?

For the smoke unit, remove all the wires and cut the trace at the red line.  You can actually cut it anywhere along the trace, that one just has to be gone.  You will then have to connect the two places with the yellow circles together and connect each of those to the PS/3 smoke heater wires, (red connector).  Polarity doesn't matter here as there's no ground and they're resistors.  The smoke fan wires (green connector) are polarity sensitive, you want the fan to spin clockwise looking from the top.


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  • mceclip1

One thing I did not touch on is you can replace any bad PS2 3 volt boards when needed with the upgrade board set and your locomotive will now be PS3.  This is not just for 5 volt replacement.  Just order the AE-1003v36 top adapter board plug it into the bottom board and you are good to go.  

Do I understand this statement correctly that the new PS3 top board can plug into an older PS2 bottom board? or is it just that a different top board is needed to match the PS2 harnesses for plug and play?

If it's the first, then can I get a deal on a dozen or so?

Last edited by Engineer-Joe

I'm assuming you have to be talking about the PS32 board set, right?  Most certainly that top board is not in any compatible in form or function with any of the PS/2 board pieces.

The Stacker board on top of the PS32 board set has the same connectors as a PS/2 board and is intended to be used as a replacement for dead PS/2 board of either the 3V or 5V logic when used with it's companion PS/3 bottom board.

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