I tried extracting the diode from this same burner, and it was extremely hard to get the heat sink off. I hooked it up to 200ma of power and nothing :/. Everything looks intact, too. I must have heated it up to much? I didn't have my soldering iron on it for more than 2 seconds. Oh well, I think I must have damaged it while removing the heat sink. How did you guys remove it? I might try it again, but I'm scared I'll mess it up.