MTH FT diesels not running right Now what?

Make sure the tethers are seated well between the three units. If the problem persists, try removing the B unit and connecting the two A units together, again checking the tether connection to make sure it is seated. 

are you running conventional or DCS?

make sure you have a good battery or BCR2 in the power unit too.

Tom

Thanks for those tips. The battery has been charged and is working OK as far as I know. I am running in conventional mode. I will check tomorrow to see if the A units run OK by themselves. And will report back with my findings. But if it does work again, I'll add the B unit and see what happens as well. As far as I know the tethers were tight, as I had to struggle to pull the plug on the A unit in question, let alone uncouple it.

Had the slave unit stop running, never had it go in the opposite direction of the lead unit. You mention the battery is charged, is this original battery?

I've never seen this before either. It is the original battery, but running it in conventional seemed that the battery was fine.

Slave board shorted.  It is repairable.  If you remove it, it can be tested and repaired.  I do the work.  E-mail in profile. G