AT & T E6012B/E6013B/E6014B/E3813B 5.8 GHz One of my three handsets (I will refer to this one as handset #2) will not charge in the base - the red charging light does Not come on. If I put another one (handset #1) of the handsets in that same base - it WILL charge that phone - AND the red charging light comes on for that phone. (I've changed batteries- not the battery). I've Tried looking to see that the part of the phone that meets up with the phone is connecting correctly. Any ideas? Thank you.