Wouldn't it be great to have sound in the Hornby Sentinel.
After searching through plenty of Youtube videos and various forums, i found plenty that had done exactly this. Nobody is very forthcoming as to explaining how to actually do it.
Lets buy all the bits and see how we can do this. Im not saying this is the only way but it worked for me.
What do you need.
A phone call to Digitrains,
i have to say are extremely helpful.
1x Zimo MX648R Sentinel sound file.
1x Rail exclusive SP12x8x8 speaker.
1x Zimo SACC16 stay alive.
1x Zimo Tantx4 Caps
We all like photos, so here are some.
The first thing you will need to do is to cut these bits out that are circled in red. You will also so need to make the slot slightly higher in the back of the Sentinel body, of witch i forgot to take a photo of.
No, i did take a photo. You will notice i have also cut out one of the windows, i thought this might get the sound out a bit better.
Taking the decoder, you will need to very carefully solder a wire on to the chip where i have circled red, this is for the "Ground -" Negative wire for the stay alive. for the "Positive+" wire, use the Blue wire.
Carefully solder the extra Tantalum capacitors to the Sacc16 Stayalive PCB, make sure you solder them on the right way round. You can then shorten the wires from the Decoder and solder the Blue + comon from the Decoder and the Wire that you soldered on to the Decoder to the negative- of the Stayalive PCB.
Make sure you get these right.
i am not responsible for any failures.
You can solder the Two Purple wires to the Speaker.
The Two photos below shows how it all goes together.
Its a tight fit but it will go in, Just!
I have left the Aux wires intact incase of adding lighting at a later date.
Pop your dashboard on top and put the whole thing back together.
Actually you might want to test it out before doing so.
Hopefully it should sound like this.
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