MM cuts out! Ideas?

My resolder job is almost done, I did not find anything bad or loose or broken. I'm hoping it was the switch (which is now perma-on) but for good measure I've got new connectors for the battery and motor as well as removing two deans which were used to extend the power cable and to run a feed to the BEC (which is now hard-wired with no deans.) I hope this does the trick!