Warhorse hudson sound cuts out

If this is the 1997 model, it has the LCRU in the locomotive, since that works with the other tender, it's not likely it's the issue.  The tender has a RS 2.5 board in it, so I'd make sure all the connections are solid and the IR sensor on the drawbar is properly aligned and not damaged. 

Physical inspection will be the key here.

I don't think the early units used the IR draw bar, they were tethered.  But inspection of the connectors that plug into the board in the tender, especially power, battery and the serial data connector line is warranted.  G

Thanks. Yes it has the ir sensor. I have completely disassembled, checked everything visually and reassembled. Could not discern any issues. I noticed it has two chips on the board. One on top and one underneath in the chip sockets. I know one is the rail sounds chip. Not sure what the other is. 

Should I just replace the whole board? Is it even still available?

I would closely inspect the IR tether and the connections on the AD-20.

Bill

RailSounds chips are a 2-chip set.  Bill is right, check the IR tether closely, I'd just inspect everything in the tender and see if anything is amiss.

what is an ad20?

I will swap out the ir tether on the tender with the known working one on the vandy tender to test.

thanks very much for the help.

I don't know that Lionel still stocks the old RS 2.5 boards, I have a couple if you end up needing one.

http://www.lionel.com/CustomerService/ReplacementParts/index.cfm?setID=&productID=&doAction=productFilter&q=warhorse&match=0

AD20 IR decoder board

Ok I will Check it out. Thanks again.

Since the other tender worked with the engine, the engine is probably fine.  You may have a broken tender sensor wire, or if the draw bar is bent, it is not aligned with the engine.  The AD-20 translates the serial data from the engine R2LC.  It is line of sight with Engine sensor to communicate.  G

You posted a reset number of 740. I think the correct number is just 74 for wireless tethered Lionel steamers. I do have the warhorse hudson. Check the connections going to the tether at the engine as there is a plug there that needs to be firmly pressed in.

Ted, If the engine works fine with a different tender, wouldn't the engine plug be fine?  G

The reset would also be fine, as that's the locomotive board that stores that value.

Guess I didn't ingest his problem fully but I do know the reset that I used is 74.

Update and thanks to all the help. Yes the ad20 board had a burned out section. Ordered a new one from Lionel on Monday, received it today.

Installed and running great again. 

Thanks again!!!!