Hello All,
In John Gray’s thread, “dcc conversion”
One of my responses was I would be upgrading a Digitrax DH126 series, non-sound decoder, equipped locomotive to their new SDXH167D sound decoder, and I would share my experience.
I am happy to report that it was successful!!!
The subject:
•Walthers HO Proto 2000 H10-44 (920-47794) “w/out Sound & DCC” (OEM). I purchased this unit used on an auction site with a blown Digitrax DZ123 (???) decoder.
The goal:
•Use the upgraded, hard-wired, Digitrax 9-pin- -non-sound- -wiring harness to “Plug 'N Play” the SDXH167D sound decoder.
On the auction website, this locomotive was listed as “DCC Installed.”
My research told me this was an after-market installation.
It was at a great price, right livery and I “needed” one.
Upon inspection- -it was sold “As Is”- -the little DZ123 had given up its “Magic Smoke!”
The good news was the rest of the electronics were good.
Upgrading to a 126 series decoder required hardwiring a DHWH 9-pin to wires harness.
The SDXH167D sound decoder uses this same interface on the “non-speaker” side.
The H10-44 ran great with the DH126 series decoder.
I simply unplugged the DH126 series decoder from the 9-pin interface, plugged in the SDXH167D sound decoder, and tested it with address #3…
Lights, Sounds, ACTION!
SUCCESS!!!
When I removed the Original Equipment Manufacturer’s (OEM) Printed Circuit Boards (P