[Updated April 10] The Rancho Murieta Association reported Wednesday that a cable TV problem affecting eight channels has been fixed, though neighbors disagreed in posts here at midweek. By week's end, the problems seemed resolved.  RMA General Manager David Stiffler said Tuesday that there were problems with channels 4, 18, 31, 32, 33, 40, HBO and Cinemax because of a faulty wire in one of the satellite dishes that bring in programming.