F7a loco not responding

[lamarager]

My F7a loco has been working fine with my E-Z Command Center.  It now does not respond - not even making sound.  I have turned the controller off & on and no result.

[Flare]

Have you checked all the connections for loose wires and shorts?

Do other locomotives respond from the same controller?

Have you tried the F7a with another controller?

[lamarager]

I do not have two dcc  locos.  I do have an easy app loco and it runs fine.  So the track connections seem to be fine.  I connected a non dcc controller and the loco light came on however it remained silent (no motor noise).  I reattached the dcc controller and the loco worked for a few feet and then quit working.  All of this makes ne think something in the dcc controller is loose or something in the loco is loose.

[Flare]

Perhaps you could test the loco and controller at a local hobby shop?