Jerry, LEDs can be very sensitive and so are your eyes. remember that the DCC signal/power voltage is actually flipping in +/- polarity several thousand times per second and that every wire and

Great news, even if I won't claim to understand why it would have shown 'occupied' in that situation. But never mind - enjoy! Wouter

Don, In you rpost you mention current leakage. I think we see this on our layout when I check certain blocks with a LED tester we use to ensure correct phasing between blocks. In some locations, If

Thanks for the feedback Richard. Glad you found the problem. and glad to have helped. DonV

Thanks everybody for your help. I feel really simple but have to admit it was a very simple problem. I had changed some wiring onto a turnout and that bypassed the BD20. Thank you all again. 🤗

Hi Richard If you cannot find any issues with what others have suggested, then desensitized the BD20 as per the Manual at:

Hi Richard, Another thing to check would be continuity with a VOM at each gap. You should see no continuity, if you do, there's the area of the problem. Ron

Thanks Ron. I have checked that following your suggestion. That is not the cause. Cheers.

Try a different input channel on the AIU. If that doesn't work... The only thing left is current leakage as seen by the BD20 on/from the track. Verify that the rail gaps are open. Look for debris on

Richard, Have you checked all the track in the block to make sure it is isolated? Sometimes cut track can rejoin. A small piece of plastic placed in the joint and trimmed properly can be unobtrusive

Hi, thanks. I have 18 BD-20's connected to AIU's. They have been working for about two months. Now one is showing occupancy all the time. The LED on the AIU is always on. I have changed the bd20 but

Sorry, forgot to mention that should be a momentary pushbutton spst switch. Paul O

Charles, what I did was put a spst switch across the insulated rail joiner to simulate a loco crossing the gap and flipping the tortoise Paul O

The third accessory address that can be set in the PSX-AR allows you to control the attached Switch Machine with DCC commands so you could use that feature to set the switch when you approach it.

Can anyone tell me if you can override the feedback to tortoise switches on a PSX-AR with a dpdt switch? The PSX-AR aligns the switches after it passes the 1st gaps in my loop automatically but there

We may soon be subjected to Rolling Black-outs as well as Brown Outs, as Californians are easily manipulated. but I am near naturally paranoid; so I tend to get off at the next exist and avoid the 80

Thank you Don and every one else as well.... I need to be careful; as I see nearly everything in a 360 degree manner. (And am often accused of being Off-Topic.) What is the Hub of the Conversation

Hello Mark: An important part of maintenance is keeping the track clean. I use Scotch Brite disks mounted to the bottom of a gondola. I wanted to make them

Clean track and other power pickup issues may be a problem. Consider using some sort of keep-alive added to your locos. DonV

Oh... be sure to use plenty of track feeders to avoid poor sectional track connections where it will be difficult later to investigate and fix. And leave room to accommodate some track roadbed vs rail