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QUOTE (Sandman @ 3 Nov 2008, 20:55) <{POST_SNAPBACK}>Hi,
I have a Lenz Set 100 with a mix of basic Lenz and Hornby (R8249) loco decoders.
If I accidently create a short circuit, eg putting a loco on the track, all decoders default to address 3.
Is this normal? It is a pain having to re program the locos!
I now know to switch off track power when placing a loco - I am just curious as to how data is actually stored in the decoders.
Can anyone offer some info on this?

The older Hornby decoders seem to be very prone to this. Search on this forum and you'll find many similar incidents. I don't recall any related to Lenz decoders though.
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