I am having very annoying problems with PWM on pins 9-11. I started with an RGB led and followed some tutorials to make it color fade. It should work just fine, after a long time checking I decided to just try simple LEDs, I found out that PWM is only working on pin 11 and not on 10, 9. On pin 11 the LED flashes appropriately, on the other two they are just always on (at 5v)
I also noticed that when the RGB led was plugged in it was reading a constant 5v, when the single color led was in it was reading appropriately.
I did try a different RGB led also.
Could I have fried the PWM on those pins, would that make sense?