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Reply to "MTH BB-1 Rear Coupler Not Firing"

Far as I can tell, there is no ground contact.

I actually had a spare coupler I could test that I knew was good.
Swapped couplers out, nothing. Old coupler worked just fine on my tester locomotive, so I suspect that FET may have gone bad somewhere.

The locomotive still runs like a champ, it just only has one working coupler.

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