Mth smoke units

Have you gone to mthparts&sales.com ?……is this the smoke unit you need?…this is a PS1 smoke unit…..only 2 wire hook up….

Pat

This model uses a different smoke unit with the board mounted below it, MTH is correct.

Hi gunnerjohn long time long see ...you helped me out alot when I'd first joined .....Yep ...that's looks like the PS2 smoke unit....try to explain this to them..since u posted the pic of it .I'll send it to them .like to find one to put back in it ....

There are other configurations of the PS/1 smoke unit as well, I have one that has a long cable with a 4-pin connector that obviously attaches to a remote regulator board.  Not sure where it came from, but it's obviously from a PS/1 diesel.

How much do you want for it?..does it look like this?..

Gunnerjohn here's my remote that sits Infront of my front motor.

This is a bog-standard PS/2 smoke unit, it is not one that was used for PS/1 with the regulator board.  You can tell from the wiring.

The indicated connector connects directly to the PS/2 board smoke output connector.

Gunnerjohn ..does that unit u have looks like the one in the pic ..but with different plus end?..here's my remote board that sits Infront of the lead motor...

What is the switch that module is wired to?

Gunnerjohn ..I think so?.. here more pics of this setup...don't know if these two wire tie up are mth factory or was this to the smoke unit..four brown on one tie and four orange on another....this sd9 was kind of a basket case...missing smoke unit and missing sound chip that I need to get .I'd used another sound chip to have it working,a shay steamer .lol...had to replace the bottom board do to the heat sink where it mounts to the loco chassis was broken..

I can't really tell, but that looks like a plain DC power supply, probably 6 volts for lights.  That doesn't look like the smoke regulator board.

Gunnerjohn does your smoke unit takes two wires to power it?.. if so how much would u want for it?

This smoke unit has the self-contained PCB at the base, it takes track power from around 6VAC through 18VAC to produce lots of smoke.

Shoot me an email on my profile email address if you want it.

Gunnerjohn got the smoke unit thanku..got some questions..what is that board Infront of that front motor? Has orange wire going to the left on off switch ...plus it's going to the center track rollers that be hot ..the brown from the right switch and looks to be directional switch...brown wires to the truck frame must be negative. ..and these two yellow wire caps the one has brown the other orange ,smoke unit hook up?..

THE BOARDS YOUR SHOWING ARE PS 1 engine QSI!

Alan

@Alan Mancus posted:

THE BOARDS YOUR SHOWING ARE PS 1 engine QSI!

Pretty sure he knows that Alan, don't get too excited.   He's just trying to get a PS/1 smoke unit that fits.

@joseywales posted:

Gunnerjohn got the smoke unit thanku..got some questions..what is that board Infront of that front motor? Has orange wire going to the left on off switch ...plus it's going to the center track rollers that be hot ..the brown from the right switch and looks to be directional switch...brown wires to the truck frame must be negative. ..and these two yellow wire caps the one has brown the other orange ,smoke unit hook up?..

My guess it's a 6V regulator for lights, but with the angles and the fuzzy pictures I really don't know.  The PS/1 smoke regulator has more parts as you can see from the one I sent.

Yes I know it's a ps1. .. gunnerjohn the two yellow wire caps..one is orange that goes the the center track pickup brown goes to truck frame meaning wheels would be negative...would the smoke unit tie into these two wire where the yellow wire tie caps are at?.. just trying to get this close to factory specks.

The smoke unit power comes from track power, but as to exactly how it's connected, that I don't really know.

I think it might connect to those two yellow wire tie connectors. I don't think mth would put wire connectors covers like that from factory would they?.. one is for ground to the trucks.. the other is the hot runs to the center track rollers. 

Actually, the wire nuts are a staple of both MTH and Lionel wiring, they're very common for the power connections.

Gunnerjohn all the mth Id played with I'd never see those in the ones I'd work on...think the smoke unit was connected to it?.. plus is the yellow wire on the smoke unit I got from you the positive hot or is it the white wire?

Like I said, I'd have to see more detail to know what it's function is.  It looks like it has four diodes, an electrolytic cap, and a regulator.  That makes it a simple power supply in my book.

I honestly don't remember which wire is "hot" on the smoke unit, I just grabbed a connector with some wire so you wouldn't have to find one.

Gunnerjohn that board that's Infront of that motor is hook to the on and off switch....doesn't the smoke needs to be hooked on a on and off switch?..ps the switch is marked on and off on the bottom frame of the sd unit

Like I said, I can't really see what that board has on it, a key fact would be what part that TO-220 package that is bolted down is.  What are the numbers on that part?  I can only say that's probably not the PS/1 smoke regulator, it doesn't have the proper assortment of parts from what I see.

I have upgraded several of these engines.  That CV board is a combination board.  It provides power for lights but also the smoke unit, hence the switch.  These were early PS-1 units.  G

@GGG posted:

I have upgraded several of these engines.  That CV board is a combination board.  It provides power for lights but also the smoke unit, hence the switch.  These were early PS-1 units.  G

Never seen that board personally, how does it connect to the smoke unit?  I don't see enough parts to do the regulation function for various input voltages that the standard PS/1 smoke controller has, not to mention fan motor power as well.

So I just checked the leftover parts.  The original PS-1 smoke unit did not have the Smoke Fan 5V power supply section.  Just the electronic to control the heat element.  That made the smoke unit PCB shorter so it fit inside.

That 4 pin connector had AC up to the smoke unit (orange and brown wires) and a blue and yellow wire for smoke fan.  They used the 6V regulator with 2 diodes in series to drop the voltage to drive the fan motor.  The switch is a double pole and shuts of Center rail AC and the smoke fan 5VDC to turn smoke off.

So the smoke unit was unique on that unit.  I imagine MTH does not have any.  G

I guess that's why I never saw any of those.

I converted a 20-2100-1 to ERR, and it had a smoke unit connected to what appears to be the same power board. The board also controlled the cabin lights. So I wired the ERR smoke-out to that board, so both the smoke and cabin lights turn on together.  The smoke unit itself has a little board on top and produces a lot of smoke.  The remaining lights I changed to LEDs.

Dennis

@GGG posted:

So I just checked the leftover parts.  The original PS-1 smoke unit did not have the Smoke Fan 5V power supply section.  Just the electronic to control the heat element.  That made the smoke unit PCB shorter so it fit inside.

That 4 pin connector had AC up to the smoke unit (orange and brown wires) and a blue and yellow wire for smoke fan.  They used the 6V regulator with 2 diodes in series to drop the voltage to drive the fan motor.  The switch is a double pole and shuts of Center rail AC and the smoke fan 5VDC to turn smoke off.

So the smoke unit was unique on that unit.  I imagine MTH does not have any.  G

I'd show this to gunnerjohn..think it might not be it. But I think this unit may be it ...4 wires and it came from a diesel....

No that is a PS-2 smoke unit.  You need a PS-1.  The normal PS-1 has all the electronics on the board.  The unit your engine had, has some but not all as I mentioned.  They remove the smoke fan controls which shortened the board.  G

As George says, clearly a PS/2 smoke unit there.  As for your board and smoke unit, it appears this was a "one-off" oddball design for some reason.  I had never seen that particular board before.

Gunnerjohn and GGG...can I'd delete that setup and use gunnerjohns smoke unit?

Yep, if the stacked one I send you fits, it's a complete PS/1 smoke unit that runs from track power.