I have an ho scale shelf layout using dc and manual switches. I just added a 3 track yard extension to the layout, no additional wiring involved. The track used is the old steel rail with fiber ties flex track and 2 atlas manual brass switches.
With the engine on the old part of the layout i turned the power on and nothing happens so i figured theres something to do with the extension.So i islotated the extension by cutting gaps in the rails on the extension lead ok turn the power on the old section works fine. So using an alligator clip i made a jumper to bridge the right rail gap. Powered up old section works fine. Did the same to the left eail every thing is fine bridge both gaps nothing works any clue what is wrong?
Something is connecting the two rails together in the new section causing the internal circuit breaker on your transformer to pop. Check to see if anything metal is touching both rail. Possible items could be: track bumpers at end of track, coupler height gauge, old piece of wire, or the rails themselves touching.