@Buco posted:Use the Z4000 and the three "problem children" misbehave all over again.
I too have seen this happen and the problem exists with early Z4000's in which they won't drop to zero volts. A simple solution was to add a lighted car to the track or use a lighted lock-on to draw the voltage down to zero.
In Nick's case above he used an old ZW which would return the voltage to zero. If Nick wants to test for sure, simply power up the PS1 board, and then disconnect the hot wire, guarantee that will ensure zero volts to the board.
