Help please with powermaster problem

First, swap the two PowerMasters and see if the issue really follows the PowerMaster.

You can put vm on track to see the voltage drop.  Interesting a mechanical unit will change.  The longer you hold dir button, longer power should be off.  I agree to swap pm, or reassign new track number.  Test again.  Pm are pretty cheap now. G

OK - this gets more puzzling - I hooked up the suspect powermaster(pm1) to track2 and it works OK.  I hooked up the other powermaster(pm2) to track1 and it works OK.  I also changed the address to five instead of one for the suspect powermaster(pm1) and it worked OK on track2(Changed it back afterwards).  So -  pm1 does not work on track one.  pm1 does work on track two.  pm2 works on track two and also on track one.  I also noticed that if I lift the engine off track1 and replace it while power is on, the electric e-unit does cycle.  So it seems that power is not really getting cut on track one when using pm1.  I was thinking that it could be a track issue, but then why would the pm2 work on track1?  It looks like a solution is just to switch the powermasters, but it would be nice to have a logical reason for doing so.

Ever hear of Gremlins?

Don't get them wet or feed after midnight! (At least I think that was the correct recommendations?)

Have you got some lighted cars on both tracks? Some electronic power controllers need a load to take them down to zero.

Lighted cars on both tracks.  Gremlins may be the truth:&gt  Follow-up as of 8/26.  I switched pm1's and re-programmed the numbers.  Everything works fine now.  Thanks for all your advice.