Reply to "027 line is shorting out"

You have to "Divide and Conquer" the loop in order to find this.

1. As Bill DeBrooke said above, step one is to disconnect the wires from the transformer and see what happens.
2. If the transformer still shows a short with the wires disconnected, the transformer is defective.
3. If the transformer is OK, reconnect the wires to the transformer.
4. Remove all locomotives and cars from the track.
5. Apply power. If there is now no short, the problem is in one of the pieces of equipment that was on the track.
6. Place them back on the track, one at a time, until you find the one that has the short.
7. If you still have a short with nothing on the track, you have to do the "divide and conquer" routine.
8. Take two track joints apart to split the loop in half.
9. Apply power to each half of the loop, one at a time.
10. One section will show the short, one section won't.
11. Take two track joints apart to split the loop again.
12. Apply power to each half of the loop, one section at a time.
13. One section will show the short, one section won't.
14. Carefully inspect the section that shows the short and locate the defect.
15. DONE!