I have two Phonak Ambra Micro M hearing aids. Unfortunately, the receiver is broken upon both devices. I would like to know how to install the new receivers? My hearing aids do appear to have a pin by the base (where the receiver enters the device) However, I cannot find a pin on the side. Can I just pull the receiver out? I travel for work, as a result my Audi is over 800 miles away. The new receivers are also cheap online :).