I have an elite 9135 system with answerphone plus an extra handset. One of the handsets is OK but the other has a fault that has the audio break up (both dial tone and talk). It sort of comes and goes in fits and starts.
I have replaced the bty to no effect but I find the problem will go away for two or three weeks if I unplug the bty for several hours (like overnight).
Any ideas what would cause the problem and why unplugging the bty temporarily solves it?
(I have tried google but can't see any similar problems reported).
