According to http://www.loral.com/inthenews/040113.htmlthe original Telstar 14 didn't fully deploy its antennas solar arrays, so a replacement is needed.
http://www.spacenews.com/satellite_telecom/110525-stuck-array-telesat-samerica-push.htmlThe Telstar 14R/Estrela do Sul 2 telecommunications satellite launched May 21 has failed to deploy one of its two solar arrays, a defect that, if permanent, will curtail owner Telesat Canada’s growth plans in South America, Telesat and satellite builder Space Systems/Loral announced May 25. The satellite’s south array has fully deployed and is providing power, but the north array has not. Ottawa-based Telesat said that if the situation is not corrected, Telstar 14R will be able to provide “at a minimum” the same level of service of the satellite it is replacing, the Telstar 14/Estrela do Sol spacecraft launched in 2004.