38 ton shay and Heisler engines

dlb · February 16, 2012, 07:06:57 PM

Does anyone know if there is a noise suppression capacitor on these engines?
I am having a problem with the Phoenix sound on dcc and Phoenix thinks it could be a
Noise suppression capacitor causing the problem. I would hate to take the engine apart for nothing.

The sound works great stopped but I lose sound function control once I start to move the engine.

David

Jon D. Miller · February 17, 2012, 10:10:48 AM

The 38 ton Shay has noise suppression built into the main circuit board.

The Heisler has noise suppression mounted in each truck.

JD

dlb · February 17, 2012, 04:34:22 PM

Thanks for the info.
Any idea about the Climax?

David

Jon D. Miller · February 19, 2012, 10:58:19 AM

Check the supplied wiring diagram for the Climax. Noise suppression is located in the bunker. It is integrated with the main circuit board.

JD

dlb · February 19, 2012, 01:25:45 PM

This shay has a circuit board in each truck that seems to be the problem.
Can I just bypass these components? (3 capicators labeled 104 and two shrunk rapped
Components, diodes maybe) board labeled G821X PCBO5 REV.A.

David

dlb · February 20, 2012, 10:27:31 PM

I removed the 3 capacitors from each board and the problem is solved.

David

Tom Lapointe · February 20, 2012, 10:36:30 PM

David, what problem where you having with the Phoenix board specifically? I have a P5 installed in my 38 tonner (& a 2K2 in an original Ely Thomas Lumber Co. #5 which I upgraded to the die-cast trucks). The P5 for the most parts works fine, but I have a rather curious issue

with it in that I can't always blow the whistle, particularly on certain segments of my railroad. The 2K2 in the older Shay has no such problems.

Tom

dlb · February 20, 2012, 11:49:25 PM

My problem was that I could use the functions keys to control sounds when the engine
was stopped but as soon as I started the engine the function keys would not work.

The noise suppression capacitors were interfearing with the signal. I removed them and
the problem was solved.

Send an e-mail to Jim and John at Phoenix with your problem. I have had good success
with them helping me out.

David

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38 ton shay and Heisler engines