But... the microwawe owen very good for destroying for hard impregnation of SMPS transformer. I've made shortcut to all pins (to avoid high voltage generating) and put into the mw owen. Just 5sec 5times with 3..4sec pause, and the transformer go very hot, the epoxy give up, and with pliers easy can disassemble.
when your school teacher says that LEDs will burn out if connected accross a 9v battery, don't try to prove him wrong by picking up an LED and holding it on the terminals of a PP3.
"look sir, it doesn't burn out- ******ow that burns*****"
You get the picture. And melted LEDs don't smell good...