We've had a couple of customers over the past couple of days complain of erratic running and flickering lights with the new Hornby class 31 when used with back-EMF (feedback)controllers.
We think we've found a solution. If you remove the Hornby DCC socket blanking plug and replace it with a Bachmann 6-pin plug the problem of erratic running and flickering lights seem to disappear.
Can't explain further, other than to say that this must bypass some of the electrical circuitry in the Hornby printed circuit board.
Hope the information is of use to some of you.