BLI F7 A+B stopped working

[bsteel4065]

Yep, magic wanded them. (Is there such a phrase???) 

[Anonymous]

Hm. I'll ponder this today. I run 4 of them together and they have not yet caused any trouble other than a bad speaker.

Yes they run in pairs with the F (Front) forward with one A unit in reverse.

Have you tried to reset the engines by DCC?

[bsteel4065]

Hi twhite

The B unit actually does have 'F' at the front of the unit the same as the A unit. My B unit is the right way round but still doesn't work. The sounds work but it does not move. I've got in touch with my LHS (100+ miles away!) Hopefully he'll be able to sort it. I'll let you know what it is.

Cheers

Barry

[twhite]

bsteel--

I don't know whether or not this is usual for the BLI F-7 units, but I found out (very quickly!) that on my BLI E-6 A-B-B unit that the radiator fans on both B units have to be facing toward the back, same as the A unit.  Otherwise, I had some VERY interesting moves!  Evidently the Kadee couplers have a great deal to do with the power routing, despite the fact that the diesels themselves are an all-wheel pickup.   Hopefully, with the B unit correctly positioned, you won't have this problem. 

Let us know, okay?  And I'm like you, I want to see those engines MOVE!

Tom

[bsteel4065]

Hi Eriediamond

Thanks! That sounds so simple, it's proabably it. (And I let impatience creep in!) I'll try again today. That's the trouble with having a break from layout building and trying locos before I've laid track. Should have stuck with my plan and ticked the 'built layout woodwork' box first. But hey! Come on, I needed a shot of sound and engines MOVING!!!

Thanks again.

Barry 

[selector]

I have no experience with this model, but is it possible the connection is not seated properly?  I have had problems only to find that the pin connector had worked its way loose, or had not been properly and tightly seated at the outset.  Otherwise, the reversal in direction may be exactly the cause.

[Eriediamond]

Do the locos have metal couplers and are the couplers attached to the metal engine frame and is the engine frame part of the electrical circuit?? If so the B unit can only be coupled the A unit by one end only or they will short each other out. Try turning the B unit around. If this works, mark this end some how to make sure this end is always couples to the A unit. Ken

[cacole]

Maybe you had them pulling against each other -- try running them with both on the same track but not coupled together and see what happens.  If they go in opposite directions, turn the B unit around.

 

[bsteel4065]

Hi

I'm in the middle of building my new HO layout so have been acquiring trains along the way as I build. I have 4 BLI steam and deisels to date. Anyway.... I bought a BLI F7 A+B and straight out the box, away they went, fine and dandy. Today, bored with sawing and layout building, I set up a length of track, attached it to my NCE Power Pro and ran 3 trains fine until I got to my A+B units. Sounds on both units. Revved up and it moved about a tenth of an inch and stopped. I removed the B unit and tried the A on it's own and it pulled away but not very smoothly. Coupled with the B it doesn't go anywhere. Reset with magic wand. Still the same.

So, dear friends out there, what do you think is wrong? By the way, should the B unit run on it's own without the A? (It doesn't). Or am I doing something really stupid?

Thanks

Barry