S3 Series

I have a Turtle Beach PX3 wireless headset system--although is has great audio and mic features - I seem to have problems every week-- Like in TS I can hear and respond, but when I go into S3,I can only hear, but mic does not work,no big deal as hard for me to speak anyway--but it should not be like it is. Can anyone suggest a good wireless headset or tell me what I'm doing wrong?
TKS