My former go-to DCC decoder was the NCE D13SRJ. I have added keep-alive circuits to several of these. However, the D13SRJ has been replaced by the D13J and the board is quite different. There are two solder pads marked "+" and "GND" located under the JST connector. On the older D13SRJ decoders, there is a solder pad marked "+" right under the JST connector pin connecting to the blue wire and another solder pad marked (-) on the other end of the board. As the keep-alive circuits I attached to these two solder pads worked perfectly on the D13SRJ decoders, is it safe to assume that connecting a keep-alive circuit to the (+) and (GND) solder pads on the D13J decoder should work similarly? I have sent in an inquiry to NCE but have not received any response.
Hornblower
Call NCE. They answer the phone and provide help right then and there.
Rich
Alton Junction
I went ahead and tried connecting the keep-alive to the (+) and (GND) solder pads and it worked perfectly. I guess I thought those nicely marked and available solder pads just looked too good to be true!
hornblower I went ahead and tried connecting the keep-alive to the (+) and (GND) solder pads and it worked perfectly. I guess I thought those nicely marked and available solder pads just looked too good to be true!