If these worked before you stored them and they weren't stored in a cardboard box directly onto a concrete floor I would think that shocking the motors with a 9 volt battery should break them free. I also use the handle of a screwdriver and smack the motor housing in several places with a battery installed and motor turned on works to but the 9volt method is my go to for stubborn motors
How do you hook up a 9V battery to a Plarail engine?
(This post was last modified: 10-05-2020, 05:31 AM by Super.)
Thanks Duck
Your pictured 9volt adapter is what I have. You can also just use 2 pieces of wire, stripped on each end and with an old 9volt battery you don't care about, glue one end of each wire, one to the positive, one to the negative side of the battery and hold the other ends to the + & - of the trains terminals.
You only need a quick 'jolt' to bring it back to life just like a Doctor using a Defibrillator to jolt a stopped human heart would.