Yobresal red died

My 150mw Yobresal red laser is now a led, but I want to know why. When the laser diode turns into a led, is it expected to heat up faster than normal? Because it feels too hot to touch after about 10 seconds. I'm going to check the current its getting in a minute but it should be already set to a safe current.

My dead LD heats up like any other diode. Go and check the current.