I have a Marklin control turntable (Marklin 7686) that is operating digitally with a Marklin 7687 Retrofit set. It is connected to my M track layout. The turntable turns okay, both left and right. In addition, the track indexing is working fine. However, it seems only one side of the track on the turntable is making full contact with the extension sets on the outside of the turntable. It's the end by the turntable pilot house. The opposite end of the turntable track doesn't make contact with the extension tracks unless I literally lift the turntable track up at the end when it stops inorder to make contact with the extension track I indexed too. Thus, I am unable to drive the train forward off the turntable on the extension tracks because it gets no feeder power from the turntable. However, if I back it out by the train from the turntable pilot house, it works fine. The turntable track is feeding power to the extention track I indexed too.

I believe the problem may be the rollers that ride the platform underneath the turntable track. One side may be worn down. However, since I doubt I will be able to replace them, one question I have is...

Can I connect all the tracks on the extension sets to an adapter feeder track that will supply power to the extension tracks all the time without damaging the turntable??? It seems the main feeder track into the turntable has supply power all the time. So, would it be okay to provide power to the extension tracks too?

I sure hope so... At a loss what I can do to improve the efficiency of the turntable without sending it in for repairs.

Any feedback would be appreciated.

Ken


Ken

Here is the link of the previous thread. Message 5 and 12 have diagrams of the contacts.

Previous TT post

No nothing else as long as you keep your red (B) and brown (O) properly connected for both the turntable and the extensions. The red (B) needs to be connected to the centre strip on the TT and the pukos on the track. If you are using a roundhouse I'm not sure the feeder tracks will be skinny enough to fit. I soldered all my wires to the extension connections to the next piece of track.