This has happened before, but while building and testing my layout, the conventional engines work fine, but my TMCC bipolar has a glowing headlight, louder speaker static and much diminished horn, and doesn't move. In the past, when I remove everything from inner/outer loops, (isolated from each other with insulated fiber pin) separate A,D posts, The bipolar flies, (until now) Also, LCS IR tracks no longer have leds lit. Could it be a common ground between the loops because I only separated the center rail? The bipolar is fine on the test track. No short on transformer ( a ZW-L) and no dimmed short light when increasing voltage. Help
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