The following links can be accessed to download the correct chain code files for programming your Proto-Sound 3/2 Upgrade "Stacker" Boards for specific locomotive types. A Stacker board is a combination of a bottom Proto-Sound 3 board (responsible for storing all the operating data about the locomotive and the sound file, specific to the locomotive you install it into). The top board provides all the sockets for controlling lights, couplers, smoke, etc. There are 2 versions of the stacker boards; 5 Volt (designed to replace factory-installed Proto-Sound 2.0 5 Volt circuit boards) which have “Hirose” style connectors. The other version is a 3 Volt (designed to replace factory-installed Proto-Sound 2.0 3 Volt circuit boards) which has “Chyao Shiunn” style connectors. You can learn all about the stacker boards in the pdf below.
To determine whether your locomotive needs a 5-volt or a 3-volt stacker board, download the 5-Volt list below:
Download the 3-Volt list below:
Once downloaded, open the 5 Volt PDF and hit Ctrl F on your keyboard to open the search dialogue and key in your locomotive item number. If no listing is returned in the search, search the 3 Volt PDF.
The chain files below that are identified by Standard Smoke are for locomotives equipped with smoke units that have two heating elements while locomotives with Small Smoke feature a single heating element.
Proto-Sound 2 Chuff Fix
O Gauge Coors Lite Silver Bullet Train
Steam Turbine with Standard Smoke
O Gauge Diesel with Standard Smoke
O Gauge Diesel with Small Smoke
O Gauge Electric with Standard Smoke
O Gauge Electric with Motorized Pantographs and Small Smoke
O Gauge Electric with Motorized Pantographs and Standard Smoke
O Gauge Steam with Small Smoke
O Gauge Steam with Standard Smoke
G Gauge Steam with Smoke
G Gauge Diesel with Large Smoke
Subway / Trolley