Lionel 691-R2LC-C Z80 Circuit board

Using anR4lc from ERR may resolve the issue. Maybe GRJ will chime in.

FWIW, the R2LC-Z80 and the R2LC-C08 are exactly the same code.  Lionel, for some odd reason, just labels their replacement boards with the Z80 version.

If the smoke doesn't work, are you sure you programmed the engine type correctly?  Without the product number, I can't offer a concrete suggestion, but most diesels with smoke are AUX1/8 or for Odyssey, AUX1/78.  If the smoke still doesn't work, you'll need to provide an actual Lionel product number.

To see if it's the R2LC, take a known good R2LC-C08 (or R2LC-Z80, R2LC-08), program it correctly, and see if that solves the problem. 

This circuit board is in a CNW 2908 Steam  Locomotive.  The C08 circuit board worked fine except for smoke.  The Lionel code for 6-2800 series Hudson and Pacific and small K4s is Aux/34.  I have not had any luck with reprogramming the locomotive yet!

What is the Lionel stock number (6-xxxxx) for the locomotive?

I wish I new!  It's a friends train and he doesn't know what he did with the box.  I tried to find a listing for it on the Lionel site by using the road# and Chicago & Northwestern 2908 but no joy?? I realize it should be 6-XXXXX.

@Sid's Trains posted:

Using anR4lc from ERR may resolve the issue. Maybe GRJ will chime in.

When all else fails don't punt, find another alternative!

What is the full part number since I'm obviously oblivious to the board series.

Perhaps it is 6-18093?

Thanks Tracker John,

When I looked up the Lionel part number, the illustration shows two plug in circuit boards.  This 4-6-4 Hudson is not a match.  The 2908 locomotive utilizes a single plug in R2LC -C circuit board on a mother board populated with SMD semiconductors.  

@gunrunnerjohn posted:

What is the Lionel stock number (6-xxxxx) for the locomotive?

gunrunnerjohn,

I sincerely appreciate your help in resolving the sound problem with the CNW 2908.  I can share this information with you and Tracker John.  When I started troubleshooting there was NO sound whatsoever.  The locomotive only responded to mobility commands.  However, it did smoke properly.  I discovered a bad sound power supply board (691-PCB1-04D) located in the tender.  After the board was replaced the sound returned.  However, I got a fast chugging sound with an underlying stuter pulsating sound.  It responded to motion commands but would not respond to any TMCC sound commands including bell or whistle.  When I replaced the locomotive R2LC-C Z80 with a R2LC-08 circuit board without reprogramming, I got a regulated chuff sound coordinated with locomotive speed but it still would not respond to any sound commands plus LOSS OF SMOKE function.  If I program the locomotive in accordance with Lionel procedures (Aux1/code 34) it immediately returns to rapid unregulated chuff WITH SMOKE function.  I have tried other Lionel program codes Aux1/0 and Aux1/4, other than Aux1/34 without any luck.

I guess the only thing left to do is find another appropriate steam sound board or a generic steam sound board and exchange the chip set if the present chip set (RS27S012 and ATLAN F) is good.  Any other advice would be greatly appreciated.

I don't have a clue with those symptoms.  My approach in these cases is to test all the boards on my test set individually first and then move on to the locomotive.

I can tell you one thing from the pictures.  You have no speed control and a standard DCDR motor driver.  That being the case, I can say that the type code I'd use for this steamer would be AUX1/4, not AUX1/34.  That's the default for a steam with smoke, and it's the one I use in the absence of Odyssey.

Thanks again John,

If you review my last comment on the crazy problem, I mentioned that I tried the Aux/4 default code as well as Aux/0 with no success.  I have followed your comments on quite a few locomotive and tender problems for years on the O gauge forum.  You have provided others with very useful troubleshooting information with great success.  I would love to have a test set like you have engineered and shown in your past postings.  However, I will endeavor to persevere.

I'm still trying to find the Lionel product code for this locomotive and tender.

If all else fails do not punt, find another alternative!

Bob