It appears that you have track that is made by Life-Like (brand.)
It is their "Power-Loc" track product.
Anyway, my paper-clip (or similar) fix would be to cut a couple of "spears" from a paper clip and
wedge a spear between each of the silver track sections. That would complete the electrical connection through the paper clip spears.
I am sure you have resolved the problem by now but for those interested I have brand new track parts... 2 packs (4 total pieces) of straight Disney HO railroad tracks and 1 pack (2 total pieces) of curved track on ebay right now. All are new never opened. I am a new member so look for ebay user "cenation1984" and check my auctions.
Our Authorized Disney Vacation Planners are here to provide personalized, expert advice, answer every question, and uncover the best discounts.
Let Dreams Unlimited Travel take care of all the details, so you can sit back, relax, and enjoy a stress-free vacation.