Bill,
I see two possible problems.
Version Firmare: v 1.0 (assuming information under unit is what you referred to). Unit came from RTR set. No flash/updates done.
If you're not using firmware 1.2 in the DCS Explorer, you may encounter some small issues with engine control. Or maybe not. MTH wasn't real specific about what they changed on 1.2.
Placed different engine on track. Track light remained purple. Engine #2 immediately began to move (Engine was not added to app).
This, however, is troubling if you did this without turning off power to the track at all.
The DCS Explorer has, in my opinion, a design flaw. That is, there is no way to turn off track power without actually disconnecting the unit from the track. I've suggested to MTH that they build a "soft power switch" into the DCS App so that an operator can remove track power in order to change remove or place engines and rolling stock onto and off the track without risking a short circuit.
Further, when the DCS Explorer is disconnected from the track, it doesn't issue a watchdog signal when it is reconnected. This causes all DCS engines to turn on in conventional mode.
In your case, my concern is that you may have damaged the DCS Explorer, as happened to my son several months ago. In his case, he experienced a derailment and, after he cleared it, he found that the DCS Explorer's fuse had blown, which is not supposed to be a common occurrence.
After replacing the fuse, each time that he rebooted the explorer its behavior had changed. Instead of waiting for a refresh command before powering the track, it powered the track as soon as the explorer itself was powered on. Further, the watchdog signal was no longer being generated and any engines on the track immediately came up in conventional mode.
Even worse, any 5 volt PS2 engines began continuously blowing their horns and any 3 volt PS2 engines took off in forward under track power.
If he waited until the explorer completely rebooted and stabilized itself, he could issue a startup command and get em to be controllable from the app. However, any time he disconnected the power from the trac and plugged it back in again, or rebooted the explore, the problem came back.
Working with MTH R&D, we figured out that the explorer was now putting some DC voltage into the tracks, as well as the expected AC. The explorer had to be replaced.
I have since modified my son's layout by doing 3 things, which I would advise any DCS Explore user to do as well:
- Inserted a switch in line between the DCS Explorer and the tracks so as to be able to turn off power to the tracks to swap out equipment.
- Connected, in parallel with the DCS Explorer (passive mode), a DCS Remote Commander receiver so that any time that rack power is interrupted via the switch, a watchdog signal is sent to all engines on the track.
- Replaced the low amperage power supply (a Z500 brick) with a Z1000 brick to prevent a recurrence of the current overdraw that caused the original problem.
Is your problem engine a 3 volt PS2 (or maybe a PS3)? Does the other engine now behave the same way that the first engine behaves? If so, try the following:
- Disconnect the explorer from the track.
- Power up the explorer normally and allow its LEDs to stabilize.
- Place the problem engine on the track but keep a hand on it so it cannot move.
- Connect the explorer to the track.
- While holding the engine, attempt to add it to the explorer. If it adds, tap Shutdown.
If that works, send the explorer in for repair or replacement.
Report back with your results - good luck.