Cynthia Lynn Dead -- One of the Last Surviving 'Hogan's Heroes' Star Dies

Cynthia Lynn -- the actress who played Helga on "Hogan's Heroes" is dead, and it's believed she was one of only two surviving members of the cast.

Family members tell TMZ Lynn had been in good health but was taken to the hospital Friday because her leg was swelling up. Doctors told her she had Hepatitis. On Monday night, her organs started shutting down. She died Monday night.

Lynn played Helga -- Klink's secretary -- during season 1, from 1965-66.

"Hogan's Heroes" was one of the most popular shows of its time, running from1965-1971. We did some checking, and Robert Clary ... who played Cpl. Louis LeBeau ... appears to be the final cast regular still living.

Lynn also appeared on "Mission:Impossible," "The Odd Couple" and "The Six Million Dollar Man."

Lynn was 76 years old. Cause of death is multiple organ failure.