Evidence had shown that Michael Jace shot his wife, April Jace, in their Hyde Park home three times in May 2014.
Closing arguments and deliberation began on Friday following a week-long trial.
Jace's defense attorney, Jamon Hicks, advocated for a voluntary manslaughter conviction. He argued that, while Jace did kill his wife, there was not enough evidence to determine that the actor had planned the murder.
See photos of Michael Jace through the years:
Jace also acknowledged that he killed his wife on May 19, 2014, in sight of their two young sons. After calling 911 and waiting for police, he told detectives that he only wanted to hurt his wife, not kill her, planning to shot her in the leg with her father's revolver.
Prosecutors maintained that it was a premeditated attack. A prosecutor told the jury that Jace was angry at his wife for asking for a divorce.
Jace played a police officer in the FX crime drama "The Shield." He also had small film roles in "Forrest Gump" and "Boogie Nights," as well as TV show "Southland."