Two replies have already been made to you explaining the facts about your original problem, and something which "you" personally will not cure as it requires sophisticated test gear to check the "exact" reason for the fault, albeit that the charge regulator is the prime suspect. Mini DV tapes recorded in one camcorder can be played back in any other Mini DV camcorder provided they (the tapes) have originally been recorded in a standard setting. That said there could be some slight picture disturbances due to differing mechanical tolerance levels between the two camcorders, although this (if it happens) should not be severe.