Fixing mic on PS Pulse Elite(Newer versions than on this site)

My ps pulse elite mic now creates its own noise whenever I go to speak and sorta echos like when you have 2 phones on call next to eachother and the mic into speaker. If that makes any sense. Realistically I want to get to the mic wires and see if it the mic wires or something to do with the mic or just the headsets dying on me. It happend mid game talking to a mate and all of a sudden he goes ahhh I can hear myself and that echo is crazy. I go and test the mic and it massively reverbs no matter what mic level it's on and I've tried going through the playstation website and they are no help and I can't select the headset for repairs.