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A week or so ago, I posted questions about problems with these units going dead.  The units would not respond to commands or accept programming.  The problem seemed to be solved by  reversing the the common and hot transformer leads to the control panel.  A few days later the problem recurred when a derailment shorted the track power.  when the layout was powered down, the derailment corrected, and power restored, all of the ASC and BPCs came back up with the leds at full brightness and no units responding to commands.  I shut down and waited several minutes, then restored power.  Same situation except that only about half of the units, in no particular order, came up with the solid, full brightness led.  The rest of the units were dark.  Shutting down repeatedly for varying amounts of time had no effect accept that the units going dark and those showing solid led would vary randomly.  After a long, (probably half hour),  shutdown, the problem disappeared.  What could be causing these devices to act in this manner?  Hope somebody has a clue.  I am stumped.

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I have six phased transformers powering the layout.  While rearranging some wiring,

the transformer hot which powers all 16 of my O22 switches was mistakenly connected to the common bus which links all tracks, accessories, lights, etc. to the commons from the transformers.  The common from that circuit was connected to the power bus for the switches.  Don't understand why I did not have a dead short immediately, but everything worked fine for several days before the first ASC, BPC

failure.  The question is, with that error having been corrected, what electrical or communications malfunction could cause the situation with the random failure described above?

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