06 sonata driver side sunvisor "drooping"

issue occurred during trip to Orlando,FL into strong late afternoon sun on Interstate highway - visor made a strange noise when moved to the sun blocking position and then went limp. I went to Winn-Dixie and bought a wooden clothes pin and clipped it to visor and behind driver side overhead hand hold. Have 30, 200 miles on car and will see dealer on Mon. - visor would not stay up and issue occurred on Sat.