In fact, that may be the only problem: If the foil is still attached to the capacitor terminals, just glue the capacitor and foil back into place.
"CS" is actually "C5," which just means that it is capacitor number 5 in the circuit.
Thank you for your reply. The loose capacitor has now come completely off the circuit board.
I don't think the CS is C5, because the CS is on top of all the capacitors, as you can see on the other larger capacitors in the photo. However the capacitor is in fact C5 from the markings on the circuit board.
I assume that the black mark on all the capacitors represents polarity, probably the negative terminal. Regardless, I can see, by the markings on the circuit board, how to orient the capacitor.
Resoldering is not an option because there is an electrical connector just to the left of the capacitor as shown in the photo which prevents any access to the left solder joint.
I have never heard of gluing an electrical component to a circuit board. What type of glue should I use to maintain electrical connectivity? Is the procedure to just add glue to the tabs and circuit board and set the component in place?
I do not know the purpose of the capacitor, but since the reverse board also has many unused connectors, I thought the reverse board might work without the capacitor. So I hooked the power leads to the track and the DC leads to the engine motor using jumper wires and the motor ran fine.
One thing I did notice is that the reverse board starts up in neutral rather than forward, as all my other Williams engines do. Do you know how to set the board to start in forward?
Thanks for your help...