I made it out to the hangar tonight and attempted to reset the EM2.  No joy.  It would not reset and I could not get it to accept any changes in the MAP table.  It is all flat lined. I will likely not get a chance to further investigate wires until I am off on Friday.  I did not see anything obvious other than the ground wire that was broken but I shall  investigate much  further.  Of course I am bothered but perhaps more concerned as to the why.  I do not want to send the unit back to Tracy again, just to hook it up and it blow again.  As I mentioned, the engine was running really well before I started concentrating on the planes finish.  I felt pretty good that after a couple of big set backs over the last two year that I was finally on track.  As a matter of fact, I felt this has been the first time I have actually been able to use the EM2/EC2 as it should be used since I can't blame the EC2 for coolant in my rotor housing or bad Jeffco in the tanks.

So, to maybe ask a couple of obvious questions....could the one bad thick ground wire breaking completely "toast' the EC2?   I  know it is difficult to make hard and fast rules, but this seems pretty catastrophic for a single wire break. <yikes>  Also, if I change to Controller B, will I be looking at the MAP table for the B controller?  (if this is flagrantly stated in the manual, I have read past it as I focused on other issues).  Okay, I have a few more questions, but my brain is a bit too fried/disappointed to form them right now. <sigh again>

So, uh, Tracy, do you have an old EC2 laying around I could buy, that way I can be trashing/working on one while your repair the other.  I am not kidding, you have any old stock of EC2's?

All the best,

Chris
Houston