Fixed my Breville 2-slice "a bit more" toaster, where the toasting mechanism wouldn't stay down (you could hold the lever down and it would heat up, but it would pop up right away when you let go).
Figured out how to take it apart
-10 visible screws on the bottom
-2 more hidden by the slide-out crumb tray
-you pry out the feet in the 4 corners and unscrew the 4 torx screws underneath them
-pull off the knob on the lever you push down
-then you can work the top of the toaster off, unplugging it from the circuit board as you go
-then when it's off, you can unscrew the ground strap
At this point, you can see the circuit board, but there is a protective plastic piece over the back of it. There is a screw fastening it down, then a clip on each end of the circuit board holding it in place. Once the circuit is free, you can remove the plastic backing.
It uses a small electromagnet to hold/release a small hook that holds the mechanism down, and that electromagnet didn't seem to be getting power. I hit the electromagnet's connections with a soldering iron, tried it and it worked fine again.