Thanks for bringing this to our attention.
I have passed along your information and concern to our Support team. I'd recommend keeping an eye on your email since they'll be reaching out to you from there.
All the best,Kariza
I’m also having this problem my roku serial number is YH00A7893822
Welcome to the Roku Community and thanks for reaching us.
We recommend removing and reinserting the batteries if this helps resolve the issue. Have you tried running the steps on this link to get your remote back up and running? How to fix your Roku® voice or simple remote that is not working | Official Roku Support
If this issue is not resolved, please let us know along with any additional information you may have that would be helpful for our team in further investigating this problem.
Please keep us posted.Best regards,Mary
We’re having the same high pitch problem even after outt8ng in new batteries
serial number: X016000VYXP5P
Our remote that is only 5 months old is also making a high pitch noise even after changing the batteries
We appreciate you reaching out to the Roku community!
We'll have a member of our Support team reach out to you via email, they will continue assisting you from there and provide a resolution to this issue.
If you need any additional help and we’ll follow up to continue assisting you.Best regards,Mary