Nope, but I probably should, since I can't get my turntable to work with my 7687 decoder - red light flashes when I try to rotate to the next track in programming mode. TT works OK with analog controller.

Thanks for pointing this out.

I use 7687 on turntable working fine with CS2.

I think I got a dud one. I see on the forum back in 2005 there was someone who had similar symptoms to my 7687, and had to send the decoder back to Marklin.

Since my 7687 decoder was not working properly out of the box (turntable did not move when instructed to move, with decoder in programming mode), and given I had a K84 on hand, I decided to try both of these setups.

Firstly I tried the setup described in the Marklin CS2 help file. I couldn't get it working, mainly because the connections shown do not line up with the connections on the newest Marklin turntable. Five connections are shown in the Marklin diagram, but six are on the turntable (yes I know 2 of those can be used with 'brown'), and it wasn't clear which way around the connections should go. I therefore flagged that as a failed effort and then went on to Dale's setup.

Firstly, because I did not want to open up the Marklin analog turntable controller to remove the bridge rectifier (see Dale's instructions - link in Sokato's first post) I purchased a new rectifier. The specs on that are 400v @ 2amps, cost about $3 NZD. The pinouts on the rectifier I purchased are different to the one shown in Dale's article, and with that in mind I proceeded to wire up the K84 and turntable. The other difference to note is that the labels for the turntable connections are different between Dale's and mine - physically they are in the same place, but they are labeled differently. So here's a table - Dale's connections on the left, mine on the right.


B = B1
0 = B2
0 = B3

1 = B4
2 = B5
3 = B6

Apart from that, and the changed rectifier connections due to the different pinouts, I wired the components up as per Dale's diagram. I gave the K84 an address, and then selected the appropriate keyboard location on the CS2 screen. I can say it all worked a treat. The first two switches essentially reverse the turntable - you have to activate both switches to make that happen. The third switch is the on/off switch which makes the turntable move. Keep in mind that when you reverse the turntable the polarity of the on/off switch also reverses - i.e. it becomes an off/on switch. Apart from those minor quirks it works great. Rather than try to get my 7687 fixed or replaced, I think I will stick with this arrangement.

Well done Dale, and thanks for publishing the method of setup.

Edited by user 24 January 2012 11:19:16(UTC)  | Reason: Not specified

I wouldn't bother trying - I couldn't get the circuit that Marklin publish to work. I gave up and instead used the circuit Dale Schultz publishes on his website, which works fine.

Dale suggests using the rectifier out of the turntable controller, but I didn't want to pull my controller apart, so I purchased a rectifier for a few dollars - rectifier specs are 400v ac at 2 amps.

Dale's circuit can be found at: http://modeltrain.serveh...igitizing_turntable_7286


And a further discussion re using a turntable with a K84 is found here: https://www.marklin-user...smann-5213---SOLVED.aspx