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I have a used Railsounds 2.5 board. Has a number 589-699 on the PCB. Simple testing by pulsing the two outer leads on P5 indicates that the chuff works, bell works, but the "whistle" sounds like a diesal horn.
Also noticed that the on-off switch on P1 did not seem to do anything whether plugged in or not.
No potentiometer on P2 so I jumped the three wires are indicated in the Digital Dynamics 2.5 manual.
Can anyone identify the chip? Also and features it might have other than chuff, bell and weird whistle/horn.
Thanks.
Other board is a Mighty Sound of Steam  3 pin connector.  Only number is stamped 2754.
It chuffs  on black and brown wire .  And both bell and whistle button trigger what  I think is a whistle. Not sure what the blue  wire does. Or what this board came out of.
Would like to put both in conventional trains.

And what is the chuffer circuit referenced in the Digital Dynamics manual?
I do not need perfect chuffs and was wondering if this would work with a steam loco instead of a micro switch on smoke lever?
Thanks
Fred

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There are three wires on the Sound of Steam Board. Black, Blue and Brown. Whistle and chuff work on Black and Brown. I assume the chuff switch is black then to chassis ground. But whistle does not work on Brown and blue as I assumed. I assumed it should be some combination of Ac and chuff switch also. But what combination? Hate to toast the board by trial and error. Do you have a wiring diagram. In the 1-9 supplements it shows white and yellow as AC and black to chuff switch on smoke unit. Another version shows the Center wire to motor field and outer wires to brushes. I do not understand that version? Thanks, Fred
The only numbers on the board are what is on the chips and what I posted above. I am starting to think it is a Diesel/electric board also. Sounds like an F-3 and also a K-line GG1 on YouTube. But what is the Chuffer circuit that Digital Dynamics mentions? And is there a Lionel part number? Since I have no diesels, anyone willing to swap for a steam one or have steam chips? Fred

Chuck may be rights since the large chip is a S12.  The diesels I have were D12.

 

I am confused, you said you had the SOS chuffing, you also said the whistle/bell button made a whistle sound so how did you power it?

 

If you examine where the wires go in you should be able to determine which wire is AC ground.  Either way the instructions say to just reverse leads if it doesn't work.  So I would go Blue and Brown for AC and then black is chuff.  See if whistle button works.  If not reverse the Blue and Brown leads.  G

Hi Bill, If you read above I wrote that I was able to power it up by jumping the potentiometer connections. It sounds like both the F-3 Diesel and also the K-line GG1 that are on you tube. They are both Railsounds 2.5. So I think it is a generic combo chip. What I was curious about is the Chuffer circiut that supposed to control the diesel RPMs. I can only intermittently jump the outer most two leads on the three wire sensor connector. It gave me what sounded like a steam chuff. I am starting to think that was a wrong assumption. But I think I need to duplicate this Chuffer circuit. Fred
Hi GGG, I get the chuff using AC from transformer for intermittent jumps connections to Black and Brown and the whistle when I jump Black and Brown with AC and push either the Bell for continuous or the Whistle button. I do not get anything if I connect Brown/Blue, Black/Blue. Not sure if I am explaining properly but I do not understand what the blue wire does. Fred
Hi Bill, The diesel shown is TMCC. And the RS2.5 board is connected to a LRCU. It shows what looks like a two wire momentary switch going to pin 2 and 3 on the speed sensor 3pin connector. No indication of a cam or anything to trigger connection. Mine makes noise chuff or whatever when making 1 and 3. Also shut down does sound like steam release but I suppose that could be brakes. Hoping to use mine as standalone in conventional.

"Yet another reason I never got an iPhone and probably never will.  Apple thumbs their nose at established standards just because they don't like them."

 

John,

That's not an accurate statement. Apple doesn't allow Flash because that application is a hackers paradise for putting MALWARE on PCs and phones. Not allowing Flash or Java keeps your OS a lot safer. OH, it may not allow you to work all the sites that use it, but ask yourself, do the websites really care if my phone, tablet or PC gets a virus?

I say this because I've been in IT for the last 28 years and currently use both Apple products and Microsoft products. Personally, when I do my banking on line, I always reach for my MAC. The one without Flash or Java on it.

Finally able to upload video. Hopefully someone may be able to identify this chip.

Used a momentary switch to trigger "chuff. Bell is nice and clear.

even with an upgraded speaker, the "horn' still sounds like a bleating animal.

It seems to have two sounds . short bleat and when held, a short bleat and then a faster bleat. Shut down sounds sound like steam but that "horn" is weird.

 

Thanks

Fred

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Railsounds 2.5

There weren't many RS 2.5 steam.  I went to Lionel's Part site and typed in Railsounds 2.5

 

The N&W Warhorse J comes up as one that used that frame and the S12 chip.  Can't make out the other chip.  But there is a WJ so maybe that is Warhorse J.  Part number is 6918049T40.

 

You can ask Lionel.

 

Possibly the horn clears up if installed in a tender, or maybe that is what it sounded like.  Or maybe a faulty component is distorting the sound.   G

Originally Posted by gunrunnerjohn:

I can't imagine the tender changing the sound that much!   My personal opinion is something is amiss there.

 

You would be surprised then.  Notice how the speaker is bouncing on the table.:-)

What surprised me is how the late SOS board is picking up motor speed from the field connection.  Heck new $1200 locos still use cherry switches for chuff:-)  G

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