Thoughts...

Dear Paul,

Firstly, are the LokSounds programed with the correct LokSound Project for the ST SD40-2s?
If NO, then it's entirely possible that the internal config of the LokSounds =/= the pin-assignments (and any ST SD40-2-specific Function Pin Out setups) of the target locos.
(Not necessarily "decoder is dead", but rather "decoder does not know which Function Output does what in this particular loco/situation").

Unfortunately, in order to confirm this, you will need a Lokprogrammer,
and download the appropriate LokSound Project 

http://projects.esu.eu/projectoverviews/search?cat=6&q=scaletrains

NB that it appears the ST SD40-2 projects were engineered for Loksound V4 decoders,
and some modellers have reported issues loading V4 projects into V5 decoders...
(Make sure your LokProgrammer Software and Decoder Firmware are Up to Date!)

Second, RE the PowerPack, again I suspect the LokSound decoders will not be configured to recognize they have a PowerPack connected. According to the V5 user manual

http://www.esu.eu/en/downloads/instruction-manuals/digital-decoders/
(6th option down the list)

Page 49 - CV113 = "Power Pack TimeOut"
Page 68 - CV339 = 31 (configures "AUX9" to act as the PowerPack "command line" on Loksound V5)

Also worth downloading and perusing the PowerPack manual
http://www.esu.eu/en/downloads/instruction-manuals/accessories/
/> (3rd option down the list)

I hope this helps...

Happy Modelling,
Aim to Improve,
Prof Klyzlr

ST files

Thanks for the reply, Prof. I did not use ST's files or ESU programmer.  I didn't know they had them until after I'd gotten the decoders.   I have one other SD40-2 with a LokSound 5 and all is well so it seems it is something with these two decoders, purchased later from the same vendor but loaded with the same sound project.

I model a period post beacon and class lights so I repurposed the ST lights.  The white class lights are now the ditchlights and the red class light now lights up the control stand gauges.  They work as expected with a LokPilot on the aux outputs indicated on the ST board diagram Nick linked to the last time I was learning new things.  It can be seen here: ST Board.  

I remember seeing something about Aux 9 or 10 controlling the power pack function, I'll look into that more.  

Paul

More mucking about

I read the manuals about Power Packs, looked through all 116 pages of the V5 manual and looked at the Scale Trains files in the ESU programmer.  I don't have the LokProgrammer but can see the CVs and compare.  I think the only relevant part of the ST specific programming is a logic function for the class lights but it is written as a sound file.  The class lights are still controllable in non ST specific projects but you can't scroll through them with one button.

Anyway, I tried lots of things but eventually took the decoder from the one (BN 7127) that works and it works perfectly.  I read the entire decoder and wrote it to the decoder I'd been trying to use from BN 7041.  The sound functions I'd mapped were now the same but still no lights or Power Pack functions.  This seems to rule out an issue with the locomotive or JMRI programmable parts of the decoders.

The drive hold feature also doesn't work right.  With the loco stopped, press F9 for drive hold and go to speed step 1.  The engine sounds climb immediately to Run 8 and if I do anything but go back to speed step 0, I can't get it to come back to idle except to interrupt power.  

One other weird thing, if I have the light functions on and pick the loco up and set it on a powered track the lights that should be on will flash once. If the functions are off and I do the same, they do not blink.

Did you buy the LokSound

Did you buy the LokSound decoders from ScaleTrains?

Perhaps the answer you got in May may help: https://model-railroad-hobbyist.com/node/42765
/> Regards, Volker

Volker

Thanks for the link.  At that time, I was learning about a different aspect of ESU decoders in Scale Trains locos and have since figured out the reason I couldn't measure continuity was Scale Trains' board drops the voltage from the decoder output to LED voltage.  It doesn't use resistors but limits current/voltage with a different method.  In the end, programming fixed the issue with the beacon.  They still make a high pitched sound that to me sounds like a slight short.

The LokSound5 decoders from Scale Trains aren't any different from LokSound5 decoders from anywhere else.  The decoder is like a computer, one person might use it to run CAD/CAM and make parts for Space X.  It would be overkill, but someone else might use it to watch cat videos and play solitaire.  The hardware is the same but has different programming.

In the same way the person running CAM has extra hardware controlled by the computer, the ST board appears to have an extra piece that is turned on with the two DIP switches to help with the scroll-through-class-light-colors-with-one-button function.  That is why ST makes a point about only being able to use the class lights with ESU decoders with their programming, only the ESU "computer" is able to run the ST specific software written for the ST hardware. If you need it, the ST software is available from ESU to install.

The current learning experience seems to be some software not working quite right and hopefully just needs a re-install.

Paul

@ Paul

With Scale Trains /ESU it is just like DCS of MTH, a propertiary system of one manufacturer. Not exact like, but close enough to call it propertiary.

At least the most simply way to replace the decoder in Scale Trains locos: (TSU-PNP8)

Useful afterlife of an MFB:

Lutz

Something went wrong with the

Something went wrong with the links:

https://abload.de/image.php?img=dsc03551ymqar.jpg

https://abload.de/image.php?img=dsc00971oai9q.jpg
Regards, Volker

@Volker : Not a direct file path...

Dear Volker,

The image URLs likely did not work because they are not directly URLs to the Image File itself,
but rather links to the PHP-generated "photo viewer" webpage. 

THIS

https://abload.de/image.php?img=dsc03551ymqar.jpg

is not the same as THIS

https://abload.de/img/dsc03551ymqar.jpg

which is accepted by the "Insert Image" mechanism just fine...

Giving...

Happy Modelling,
Aiming to Imbed direct URLs,
Prof Klyzlr

Dear Prof, my links show the

Dear Prof, my links show the website with the photo, yours just the photos. But the photos are the same.
Regards, Volker