TMCC issues

My guesses:

1.) Low Battery in both CAB-1's.  This would be unlikely but it is possible.

2.) Bad Base-1.  Can you borrow one from someone to try a temporary swap?

3.) The two locomotives were assembled incorrectly at the factory and their switches are both reversed, i.e. "program" is really "run", and vice versa.  Also very unlikely, but possible, because it's happened before on individual units.  (If you personally were originally able to program them in the first place then you would have noticed the reversal at that time.)

Mike

Hi Chris,

You might pull the shell on one of the engines to see if the run/program switch is connected to the board, maybe a bad solder joint or broken wire.

Ray

Thru tiu so first test just tmcc base.  If that works what cable used and what version of tiu.  Does tmcc base power supply have good earth ground.  G

@Rayin"S" posted:

Hi Chris,

You might pull the shell on one of the engines to see if the run/program switch is connected to the board, maybe a bad solder joint or broken wire.

Ray

@GGG posted:

Thru tiu so first test just tmcc base.  If that works what cable used and what version of tiu.  Does tmcc base power supply have good earth ground.  G

Ray, happens with any engine that I try to program. I would assume that, but not  so many engines.

George, no cable. Just ground going from transformer to command base.

Tried with multiple sets of batteries as well.

Chris,

Is the headlight flickering on one or more of these engines while they're powered on the track (either running or stopped)?

Mike

@GGG posted:

Thru tiu so first test just tmcc base.  If that works what cable used and what version of tiu.  Does tmcc base power supply have good earth ground.  G

It seems weird to me that control is good but not programming?

@Engineer-Joe posted:

@GGG posted:

Thru tiu so first test just tmcc base.  If that works what cable used and what version of tiu.  Does tmcc base power supply have good earth ground.  G

It seems weird to me that control is good but not programming?

Go Bills!!!!!!!!

Why go back to DCC when I have DCS!

Agreed.

Mike

@Mellow Hudson Mike posted:

Chris,

Is the headlight flickering on one or more of these engines while they're powered on the track (either running or stopped)?

Mike

No flickering at all. No difference in hovering my hand over the engines, either.

as far as earth ground, maybe I have an outlet issue? It’s plugged directly into the wall.

1. Is transformer and 3 pronged plug from command base plugged into the same outlet?

2.Did you try another outlet?

3. Is transformer and base plugged into a power strip and does not have a surge protector in it?

Take an insulated wire directly from pin 5 of the 9-pin serial connector on the command base and lay it around the problem engine on the track.  If it works then, you have a house wiring grounding issue.