I have recently acquired three Atlas O F2/F3 Phase 1 Powered A-B and Non-Powered B EMD Demonstrators (Only available to Golden Spikes) with Cruise.
I have taken the units apart to replace a few fallen porthole windows and noticed that the units indeed have cruise, all though Atlas shows the units has ERR Cruise, I doubt that is actually the case as the rear motors have the Tach and sensor attached to them. The electronics looks very similar to another Atlas GP60 I have which I believe has a TAS board.
The cruise switch is on and tested with a multimeter to confirm continuity and it is working, I also tested this on the board to make sure the cable was intact. All tested fine.
The strange part is that the unit slows down when going down hill which leads me to believe the cruise feature is somewhat working but going up hill with no cars behind them or even turning on curves will cause the unit to slow down to a crawl.
I also thought it might be a power issue but the curve in question has a power feed directly soldered to the track.
Do any of your great minds have a clue as to what I can search for next?
My layout is fairly small, 12x5 and I use a PH180 w/ DCS Rev L. and obviously a TMCC Base. I do not have a TMCC Remote and run the A-B-B units in mu "Lash-up". Yes all three are added to DCS, I installed a Mini Commander EX in the dummy and converted the rear fixed coupler to an electro-coupler.
Any help will be greatly appreciated, I LOVE these engines and fixing this small inconvenience will really put the icing on the cake with these units.
Here is a link to a video I made on how to disassemble the units so that you folks can see it internally.
Thanks for the help!
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