Diatchenko, 52, was discovered after colleagues who feared he hadn't heard from him for several days called the police.
A colleague told police he last heard Diatchenko via text message on April 19. Diatchenko had recently suffered a work-related injury and is recovering, according to the police report.
The colleague told police that Diatchenko was electrocuted on April 13 during his work and that he was absent, according to the police report.
Police entered Diatchenko's residence on Wednesday and found him numb, kneeling, face down, on a reclining chair in his living room, according to the police report.
Police said there were no signs of foul play. The cause of death has not yet been determined by the medical examiner's office.
Diatchenko also appeared in "Sons of Anarchy", "Alias" and "Bones", and provided voices for video games, according to IMDB.com.
