SeaLaunch has postponed a planned launch of a DirecTV (DTV) satellite “to study an issue.”

SeaLaunch is a joint venture owned by Boeing (BA), RSC-Energia of Moscow; Aker ASA of Oslo; and SDO Yuzhnoye/PO Yuzhmash of Dnepropetrovsk, Ukraine.

TVPredictions.com reports that the launch could be rescheduled for next week. The new satellite is intended to expand DirecTV’s ability to broadcast channels in high def.

Earlier today, I noted that a new satellite launched for DISH Network (DISH) suffered a malfunction and did not reach the intended orbit, slowing its own roll out of more HD channels.

DTV today is down 18 cents, at $24.57; DISH is down 98 cents, or 3.5%, at $26.76.