I have a two set phone and both phones will charge on the master. When I put either phone on the extension charger the light will come on, but after 1 second it dies out.
I have used a pencil eraser and cleaned the terminals as best as I can but the charger light will not stay on and it is not charging. The spring on one side looks a little weaker than the other side, but I am pretty sure both are making contact.
It is an ATT phone. It is not this model but the base handset looks like it.
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I am thinking about taking some WD40, and spray each terminal as a last ditch attempt to get it to work.