Effective with 30th June 2017, YouTube will no longer support Flash app. Below AQUOS televisions’ YouTube support will be affected.
Models:
LC-46LX840H
LC-52LX840H
LC-60LX840H
LC-80LX842H
LC-52LX640H
LC-60LX640H
LC-40LX540H
LC-46LX540H
For more information, please visit https://support.google.com/youtube/answer/7379403?visit_id=0-636331120879506069-89041238&p=tv_lbl&hl=en&rd=1
Sorry for any inconvenience so caused.