Anova Nano How to open Electronics Area - Won't Heat

I lent my Anova Nano to a friend to cook a corned beef and when I got it back I realized that it was full of stuff and the friend said that he didn't realize that he was supposed to put the stuff to be cooked in a plastic bag.

I figured out how to get the bottom plastic cowl off and clean all that stuff but it doesn't heat.

Does anyone know how to open the Electronics area of the Nano so I can troubleshoot and hopefully repair the device.

-Tom