SC-2 power "bleeding" when used for switch control

This is a good question, I would say you possibly have a defective SC-2, however I’m not an authority on electronic wiring. Have you considered re-programming the SC-2? My layout is all Legacy/TMCC/ASC’s, BPC’s, controlled, all the switches, blocks, operate by Cab 1, Cab 2. I’m getting ready to add an SC-2 to operate accessories and this is why I’m interested in the answers you get to your issues. 

One thing I added to my switch wiring with the DZ1000 was a push button control placed near the switch, thus being able to control the switch by hand, or with the Cab 1/ or 2. So, with 40 Turnouts, not many issues yet, over 18 years. Now, I do have 1 issue, my last turnout when I push the button near the switch, it doesn’t work but causes 2 of my ASC’s to buzz. The push buttons do not flip the switch. That’s my only issue. The Cab 1 & 2 flip the switch.  Good luck and hopefully some of the seasoned electronic experts will chime in, Lionel Customer service would be a good source for your solution. Great Question. Happy Railroading 

Try clearing the accessory function on the SC 2 as per instructions and reprogram for switches only. 

On the SC-2 the Sw1 has a problem with FasTrack switches if I am remembering right. There is a way to remedy this something about cutting the trace on the board.I wonder if it has the same problem with the DZ-1000 switch motors.

Thanks guys. Interesting about "cutting the trace," which kinda rings a bell. Let me poke around and report back...

Rod, I did do the "clearing" process as explained in the manual. Couldn't hurt to try again I guess.

You should power the switch motors with an separate ACC power source - power the SC-2 with the included power supply

The trace cut is cutting the ground with a rotary tool disc where the ACC power for the SC-2 can be connected on the lower left side.

I cannot find a photo in my files and mine are packed away now. 

Aha - here is photo in this thread - clickety-click

You da man, Carl! That pic of the cut to the board looks like what I need.

My switches are already powered by a separate accessory supply and the SC-2 is powered by its wall wart. I think that's the only way to power this combo of DZ1000 and SC-2:

https://z-stuff.net/app14.html

Thanks again all,

Alan P

If you’re running TMCC or Legacy, power the SC2 from the track power. I have 18 Z1000 machines powered that way with absolutely no problems at all. Try that before doing the trace cut. You have nothing to lose. 

Hi gang,

Just wanted to report back. Cutting the printed conductor "trace" to the SW 1 relay solved the problem, as advertised. I'm attaching the pic of the cut that had been posted on the other thread, in case anyone searches here for an answer.

Rod, that makes sense but I only run conventional with the Legacy Powermaster. I actually prefer MTH engines and also run some old postwar stuff sometimes. Without constant voltage to the track, I prefer using the separate supply.

Good to go Alan. Thanks for the update.

Nice! Happy Runnin'!

This is a great thread, so where I see the scratched mark area, is where the ground is cut? I power my ASC’s with a ZW-C lionel transformer. Thanks for letting us know this idea worked. Wow.

Hi Larry, yes, that's a ground feed to SW1 on the SC-2. As I understand that is useful if you're running traditional postwar-style Lionel switches, but not for the modern types.

I have no idea if any of this applies to the ASC.