In case anyone has a 4dtv receiver that they haven't sold yet there is a guy in Chicago under the name C-band Forever/ Glentech who is advertising that he replaces batteries and remaps these receivers. He has burned countless people and it has been documented on many FTA sites on the net. If you have one of these receivers steer clear of this guy. But don't take my word for it, have a look around. ATS electronics in North Carolina still services these and have a good reputation.