Hi @shankar083,
A warm welcome here in the Roku community!
Thank you for bringing this to our attention. No worries; we're here to help!
Did you already try to change the brightness setting on your TV? Also, please provide us with a video clip or picture of the issue you see to investigate further.
Please keep us posted.
Thanks,
Anjelie
Anjelie A.
Roku Community Moderator