Hey I just installed new buzzer in both the xp limited I got, one the buzzer works fine install lanyard wait alittle bit and you get the beeps. The other one doesn't havent heard it beep at all I even seitched keys the one beep indicating it had wrong key, other one didn't anything. I did check both beepers before installing to make sure they worked. What else would make it not beep that I can check? Thanks