Suddenly I have problems with three BLI n-scale "engines."

[rogergperkins]

Suddenly I have problems with three BLI n-scale "engines."
The E7A is not working properly, no horn sound, very sluggish.

I just received an E6B powered unit that worked briefly, but now the horn does not work;
biggest issue is that it runs  in reverse, but very jerky in forward.  Even in reverse, the engine runs slow at maximum speed setting.

I found that the unpowered B unit that came with one of the three E6A or E7A units is causing a short when I place it on the layout with another working unit.

I have tried to do the reset function in program on track, but that has not resolved the issues with any of the powered units.

I am using an new NCE digital system.

[sizemore]

Shorts are bad and do damage to decoders when local to the locomotive with decoder. In some instances any kind of short circuit, bad ju-ju can still occur. If you've performed a reset on the affected locomotives with decoders your safest bet is sending them to BLI for repair service.

The S.