It could be a variety of things that is causing the issue but if the motor works but there is no sound, my guess would be either a faulty speaker or possibly the whole circuit board is dead. I would also check the “safety switch” which from your picture I believe is the small square black (with yellow wires) piece. This is the switch that needs to be depressed in order for the train to move. I have seen this go bad as well.
From playing around with it the “safety switch” is not depressed in any way I dont think there was any thing holding it down. There where no lose parts inside when I opened it up the board from the looks of it are caked in crud any way to clean a board like this? So I take it if its a dead board or switch he is spare parts then. The parts seeing as how its a out dated model are hard to come by lol
(This post was last modified: 11-07-2018, 11:38 AM by Super.)