Hi ca117, welcome to the Roku Community!
We understand that you are encountering an issue with the remote finder feature on your Roku device, and we're here to assist you.
Please be advised that the Roku remote may not emit the remote finder sound if the batteries are depleted or if it is out of range of the wireless network.
We also suggest resetting your Roku remote by pressing and holding the Back and Home buttons simultaneously for about 20 seconds. After doing so, pair it again.
For more information about the feature, please check the support article mentioned below: How to find your Roku remote using the lost remote finder feature | Official Roku Support
Please let us know if the issue is fixed or reply to the thread for further assistance. We'll be glad to help.
Thanks,
Jharra