I have been trying to fit a DCC chip to a (Hornby?) tender drive Britannia loco.
Even with the 3 pole ringield motor brush plate fully isolated at the attachment screws I an getting an earth feedback to the earth brush holder via the armature spindle (shaft).
I am at a loss how to overcome this with the few (small) tools I have.
I will be very grateful for any advice.
Hopefully I have attached photo's of the set up, which does not seem like any Hornby I have traced so far.
Edited by Atholl, 10 October 2011 - 13:01 .