MTH Z4000

First off you will find four breakers on rear of Z4000 near terminals.

Ron

Thanks to Ron.  I am in my 8th decade.  I claim senior moments.  That's my story, and I'm sticking to it. 

I am using old Lionel/Marx "lock ons" for transferring power from the transformer to the test track.  I disconnected the lock on, attached alligator clips to the appropriate rails, all came on. Re-attached the lock on- no power to track. I changed the lock on, powered up as it should. Inspected the defunct lock on-no apparent visual problems seen.  Still a mystery to this "senior citizen."

Thanks again Ron, I'll also check the CB's (how I don't know).

Syd

Sometimes the "lock-ons" need to be re-bent for a tighter fit on the track.

Thanks Bob for taking the time to respond.  I'll try your suggestion.-Syd

Fourteen lighted aluminum cars plus the engine(s) is quite a LOAD for ANY transformer!  

NOTE: If your total amperage exceeded 10 amps, the Z-4000 will automatically shut down.

Try running a SHORTER train. 

To Timplate Are and Dale H-Thank you both for the input.  I have come to the conclusion that 14 lighted passenger cars exceeded the capacity of the transformer, regardless of the condition of the "lock-on."  To Dale H, I have read about the LED's.  Where are they obtained?  How are they installed?  Are they bright while like the ones in my house?

Again, thanks for responding.

Syd