Ashley,
John is right.  Perhaps the P L tone has been changed.  Just to be 
sure of your gear, remove the antenna from one of the handhelds and 
listen to the input of the repeater and be sure that you can hear the 
other handhelds in your stable.  Then replace the antenna on the 
receiving handheld, remove the antenna from one of the ones you have 
proved and then check the output of the third H T.  Good luck and 
keep increasing your handheld tribe!!
pat, K9JAUAt 07:15 PM 7/14/2015, you wrote:
>Evening.
>So I just moved, and finally got back on air after a few months or so. =
>I=E2=80=99ve found a local repeater and tuned all three of my HTs to the =
>appropriate channel and PL tone. Thing is, for some reason I can hear =
>everything perfectly fine but can=E2=80=99t seem to send the slightest =
>of signals. Someone please tell me what I=E2=80=99m missing before I =
>lose my head?
>Thanks.
>Ashley (KC1CPS)