Thursday, October 2, 2025

Trainorama SAR 930 class gets a sound decoder.

    A second run Trainorama 930 class unit, 930, in South Australian Railways maroon and silver with the reflective side panels. These second run models were delivered in September 2021 for $250 per locomotive and were provided with a DCC ready 21 pin motherboard.

    With the body removed, we remove the original speakers, dummy plug and of course the crew, but only from one end as 930 is a single ended unit.
The void at the rear of the loco where the No.2 driving position would be is a good size for a homemade stay alive with six super caps.




    With the original speakers removed, a DCCSound speaker with dual drivers is installed at the No.1 end behind the driving cab and wired to the motherboard speaker pads.


    Underneath there is a three pole switch, one of the poles is modified to allow the switching of the keep alive and an extra wire is fed down through the chassis to connect the U+ from the decoder for the stay alive. This allows for the isolation of the stay alive to allow programming of the deocder.



Speakers installed, decoder fitted and stay alive in the rear held in place with a blob of hot glue.




    On the programming track being configured and then tested.

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