[Savage GT]

I was having an little issue with the big loco's randomly stopping when crawling.
I had a clean track I had checked all the wheel contacts,  but it was still happening, I guessed the DCC chip was being very fussy and the tiniest loss of connection was upsetting it and causing a reset. This is what it was doing: 



The obvious fix was to fit a stay alive even though one would not expect too on a loco with pickup on 7 axles ! But despite all the electronics being in the tender, there is little room unless you want to undertake major surgery. I didn't so I looked for a smaller solution, I knew I didn't need lots of run time, just a reserve for a micro interruption in power. I found a board that could be fitted with up to 5 small capacity tantalum capacitors, only it would only fit with a maximum of 2 in the space available without taking a dremel to it, so I gave it a whirl.
There is no discernible run time when lifted from track, but it does exactly as I hoped and provides enough to keep it moving.



But ... I didn't have the sound running, so had to check that didn't push the power draw that little bit to much and cause the stopping to return, thankfully all was still good.



Of course, someone had to come and find out what I was up to, causing an outake: