backup from cpanel not phpmyadmin

hello every one i posted b4 and no one answer me
anyway i have a big problem today
i was always download my backup for database from cpanel only ( backup for database )not from phpmyadmin coz i don’t know from where in phpmyadmin download the backups
i faced problems with my database suddenly so i restore the backup then i found that the all words in the database is questions marks .. i think that problem with the chratset but i don’t know from where i can fixed that
some one told me that i must downloads the backups from phpmyadmin not from Cpanel
so i only now have one backup downloaded from the cpanel can i fixed this backup in anyway .. or what
thanks in advance
my blog is here eskandarany.info