Sparks and No Heat

As of today, there are small lights on the outside of my hotend. I first noticed these in changing the nozzle. Video clip included in this post.

After recording that clip, I waited about half an hour. From then on out, the hot end would no longer heat up. There is a picture of the temperature history included. There is a single small blip on the first attempt to raise the temperature

It is worth noting, there was a collision with the build plate two weeks ago. But it has been printing since then without incident