Strange Cross-link Problem

Have you checked for a wiring/switch issue?

Don't know if it is even possible, could a car be jumping the gap somewhere and back feeding power when you flip the switch?

Have you checked the track insulating pins? Sounds like a center rail track connection problem more than a transformer issue.

Is there a command control engine parked nearby? Even in the off mode a CC engine will allow power to go straight through it.

Lee Fritz

We have a similar problem at the Edgerton MRR Club where I am a member. Look at your insulating pins/ track joints. Somewhere there is a small whisker of metal or something else that is conductive across a gap. The meters on the mth4000 show voltage and current on one side but only voltage on the other. This shows that power is somewhere jumping from the power side to the off side. Thus showing voltage but not current. Hope this helps.

Yes! And I'm almost temped to leave the screws off the panel for a few more operating sessions until the testing period is over. I'd do this, but the panel is unstable unless it's fastened down and it's harder to operate. I didn't put all the cable ties back on the bundles I had to un-bundle to trace the wires. It won't hurt anything.

Here's some photos to go with the lengthy discussion on the problems. The first picture shows the removed jumper, and the second, the added ones.

You can see the insulated pins that isolated these two stubs of a track. In most people's installations, this problem would never arise since most people don't put blocks on either side of a crossing.

Many don't realize that Ross crossovers being unwired are built in blocks.