A-B-B-A rear engine issue

Fix this.  Wired up interestingly (factory).  For this unit they put LNB on the IL circuit controlled buy Aux light softkey.  The HL circuit has HL and IL, Lead A has operating ditch.  So when you go in reverse this unit has Lead A IL go out with the HL.

The trail A has IL running LNB, RL has RL, IL, and the non operating Ditch lights. When in reverse everything lights.

Cause: the IL wire in the LEAD was frayed going to PCB and ultimately broke.  That was causing low return for LNB and then they stopped working.  G

@GGG posted:

Fix this.  Wired up interestingly (factory).  For this unit they put LNB on the IL circuit controlled buy Aux light softkey.  The HL circuit has HL and IL, Lead A has operating ditch.  So when you go in reverse this unit has Lead A IL go out with the HL.

The trail A has IL running LNB, RL has RL, IL, and the non operating Ditch lights. When in reverse everything lights.

Cause: the IL wire in the LEAD was frayed going to PCB and ultimately broke.  That was causing low return for LNB and then they stopped working.  G

Delivered it to George today. He had my unit for all of 90 minutes. Barely time to unpack it.

And he fixed it. George came very highly recommended. I see why.

I was so reluctant to send this out for repair. Thanks to all of you that encouraged me to do so.

George! You are my train Yoda! Thank you!

Tony

@Tony posted:

Delivered it to George today. He had my unit for all of 90 minutes. Barely time to unpack it.

And he fixed it. George came very highly recommended. I see why.

I was so reluctant to send this out for repair. Thanks to all of you that encouraged me to do so.

George! You are my train Yoda! Thank you!

Tony

I stole this image from John Will, however, it fits this story,……

Pat

@harmonyards posted:

I stole this image from John Will, however, it fits this story,……

Pat

I humbly respond...perfect!  Oh I deserve that!

I’m glad George got it fixed for you, …..that’s a tough set to find!

Pat

@harmonyards posted:

I’m glad George got it fixed for you, …..that’s a tough set to find!

Pat

No kidding. I searched for it for quite some time. Had given up. Busted my budget on a beautiful SD70ACE, only to stumble upon the Norfolk Southern a few days later, by pure dumb luck. Sold the SD, and a set of passengers cars - at a heavy loss - but wasn't letting the NS set go.

@GGG posted:

Of course I will fix it.  Thanks for the kind words. G

George, how do I "follow" you on here? 

@GGG posted:

Of course I will fix it.  Thanks for the kind words. G

Thank you George!

Got it back safe and sound today. Been running it for about two hours. All systems are a go!

Looks good.  I am not a real railroad expert, but after seeing how they wired that unit, the MARS 2 signal does come over from the LEAD A to the Slave.  The Slave generates a flashing MARS 2, but they did not use it in the Trail A.  If the MARS 2 wire was added and connected to the ditch light pad, the Trail Unit ditch lights would flash.  Together vice sequential, but flash when in reverse.  G

@GGG posted:

Looks good.  I am not a real railroad expert, but after seeing how they wired that unit, the MARS 2 signal does come over from the LEAD A to the Slave.  The Slave generates a flashing MARS 2, but they did not use it in the Trail A.  If the MARS 2 wire was added and connected to the ditch light pad, the Trail Unit ditch lights would flash.  Together vice sequential, but flash when in reverse.  G

Yes it would be nice if they flashed, but I'm happy they work and the number board lights are functioning. I usually have my engines locked in F/F direction anyway, so I'm willing to be happy they at least come on when in reverse.

And I must be learning a bit. I actually understood your explanation here!