So i bought myself a new headphones and same problem...I dont know whats the problem, but i think that problem started when i moved headphones from rear panel to front panel jack....but not sure about that!!!
You can test that easy
just move the new mic in the back again and see if it's ok or u get the ticks again. If it's ok it means your front panel conector/cable is damadged or loose and the crackling sound you hear is the static that results from that.