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Nevermind. Seems I've got it figured out. I haven't quite enough time to do any further testing. I'm just waiting for my soldering iron to heat up so I can throw it back together and hit the road. Not only did I verify that the touch panel was dead, but I think I just fixed it and my two other dead ones. I promise I'll do my best to remember to come back and post further details along with a short video I made of the process. I don't know how everyone else's panels usually die, but once this one passes a road test I'll be prepared to assert that I've just repaired all three of mine in about 60 seconds each. With any luck, the same process will work for many others as well.
Ok so since my iron still isn't quite there, here it is in a nutshell:
One of the wires showed infinite resistance to all other wires unless I pressed on it very hard between my thumb and finger, so I decided to risk it all and melt the glue holding that wire on just a bit and then hold some pressure on it while it cooled. Presto - the damn thing works. Like I said, video and more details when I return from my trip.
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