Quote: "We have a test setup to test every board before they go out, and we're interested in finding more weirdos to test for."
Answer: I must be the only person that had this wierd problem? <--- this is good to know.
Quote: Correct me if I'm inaccurate. I'm assuming you checked that the voltage at VCC was correct.
Answer: I just measured the header VCC and gnd - it was OK for the battery, barrel connector inputs.
Quote: "Did you check anything else? Was the clock running?
Answer: No, and how can I tell if the clock was running? The blinky program should
indicate if the clock was running.
Quote: "Did you check power consumption?"
Answer: No
Quote: "You mentioned that the chip "wouldn't reset". Was the chip starting up...did the blue LED blink, like normal, at startup if you power cycled?"
Answer: In all cases on external power with only one jumper, the blue light would always cycle, on startup, then stop.
By pressing the reset to restart the ARM the blue light would stay on constantly.
Note: My program, on the Maple, was a 50ms blue blinky program.
Hope this helps.