I'm having the same problem as everyone above. I have a feeling my unit has just crapped out. I see that you can buy just the transmitter for $99 instead of the transmitter plus base for $169. Problem is, I don't know if the transmitter is bad and won't take a charge or the receiver base is bad and won't charge the transmitter. First question is how you can tell which piece is not working. Second question is whether a new transmitter will work with the old base.