my video 8 tapes 9 yrs old only play fuzz?

Please help. After digging out some old tapes and camcorder i have 1 hi8 tape that plays perfect and 4 video 8 tapes that will only show me fuzz on playback. My dad and sister are on these tapes and are sadly deceased now so its a real big issue for me to try and recover the footage on these cassettes. I beg anyone for help please. Its a mystery. I want my kids to see their granda and aunt and am totally devastated. The cam order re ords perfect and as i say it plays the 9yr old hi8 perce t. Please help. How can i fix these tapes