I'll let someone else answer the heat on the main board question.
How did the ESC become detached from the board?
No arcing is a good thing. I think it's also an indication of no power at impact. Did you remove the battery or was it ejected?
"One last weird thing I noticed, after the crash I picked up the battery..."
How did the ESC become detached from the board?
No arcing is a good thing. I think it's also an indication of no power at impact. Did you remove the battery or was it ejected?
"One last weird thing I noticed, after the crash I picked up the battery..."