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Post by Adam on Mar 18, 2024 19:33:55 GMT
What you have there is a LocoSound engine. Uses the same connectors as the 5v Proto2 did. It should have a 8 ohm speaker in the tender, and no battery. Exact part# of the board you have: AE1160002 LOCOSOUND / STEAM / PROGRAMMED / BANTAM S-2 TURBINE  A 5v Proto 2 used a different tach reader, 16 ohm speaker, and has the battery. Jim Any leads on a wiring diagram? |
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Post by Adam on Mar 18, 2024 20:00:23 GMT
Based on what I am finding, LocoSounds came out around the same time as PS2 and is a sort of cut down version of PS2. I am suspecting that PS2 wiring diagram may still be accurate (the board sure looks similar). All I need to do is figure out where the speaker is connected.
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Post by harborbelt70 on Mar 18, 2024 20:37:58 GMT
Based on what I am finding, LocoSounds came out around the same time as PS2 and is a sort of cut down version of PS2. I am suspecting that PS2 wiring diagram may still be accurate (the board sure looks similar). All I need to do is figure out where the speaker is connected.
But that leads on to Point 2 which is that the pinouts/wiring are not the same. Somebody who actually has experience of working on these boards can weigh in but meanwhile see this diagram:
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Post by Adam on Mar 18, 2024 21:26:23 GMT
Thanks!!
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Post by jimsandman on Mar 19, 2024 6:09:04 GMT
I'm confused. Did you not get a tender only the boiler part?
Harborbelt70 posted the correct Tender pin outs between locosound and Proto2.
So what are you actually trying to accomplish, and what exactly do you have?
Jim
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Post by Adam on Mar 19, 2024 8:33:26 GMT
I don’t have a tender. I purchased only the boiler part. Sorry of that wasn’t clear.
So I am making a tender out of spare parts and wanted to see if I can utilize the sound from the board.
After some initial tests I suspect the board isn’t functional, at least not for sound. I will do a bit more experimenting before I conclude.
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Post by harborbelt70 on Mar 19, 2024 10:04:23 GMT
The diagram I found shows both speakers with the same impedance at 16 Ohm but on reflection I am not sure that is right - I have read somewhere that LocoSound used an 8 Ohm speaker. I'm not sure that would prevent any sound being produced but it might be worth checking. Have another look at the MTH Parts site and see if that discloses different specs. However, I would not be surprised if after all this time the board is defective/not fully functional.
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Post by Adam on Mar 19, 2024 11:11:16 GMT
The diagram I found shows both speakers with the same impedance at 16 Ohm but on reflection I am not sure that is right - I have read somewhere that LocoSound used an 8 Ohm speaker. I'm not sure that would prevent any sound being produced but it might be worth checking. Have another look at the MTH Parts site and see if that discloses different specs. However, I would not be surprised if after all this time the board is defective/not fully functional. I was actually using an 8Ohm speaker to test but it shouldn't matter. I do think the board is likely not functional (at least not fully). Couple of more ideas to try before I give up on it and go full silent mode.
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Post by jimsandman on Mar 19, 2024 21:40:07 GMT
MTH diagrams show a 8 ohm if board in tender, but then a 16 ohm if board is in the boiler. Odd - I never noticed that in the past. For a quick test either would be ok. Adam, Thanks for clearing up that you don't have the tender. Makes more sense now why your experimenting. ![]() |
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Post by jimsandman on Mar 20, 2024 2:08:54 GMT
Adam, If you get MTH Part # BC2200028 TETHER / STEAM / 10-POSITION / 170mm L SLEEVE / W/PS2 10K OHM POT / LOCOSOUND / RAILKING STEAM LOCOMOTIVE That should provide the tether and 10K pot you need, then just add the speaker to the supplied wires. Should take care of the wiring for build your own tender. mthpartsandsales.com  Hope this helps. Jim |
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Post by Adam on Mar 30, 2024 20:33:17 GMT
Thanks to Jim's post pointing me to the correct connector and the purchase of a speaker I am happy to report that the sound is now working on this engine. It's nothing spectacular (a horn, bell and some basic chuff sounds), but that's better than no sound.
Next up is to do some cosmetic work on the engine and tender shells as well as some maintenance on the engine so that it runs smoothly.
This is going to be a Christmas themed locomotive. Should be a fun project!
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