Roku doesn’t have a solar remote. If it is rechargeable, try plugging it in for around 5 hours. You may not have noticed the charging port since its under the purple Roku tag.
This page might help:
https://support.roku.com/article/1500000696321
I’m not sure what “the stupid thing hearing device on it WILL NOT TURN UP” means but perhaps something on the page linked above, plus a full charge, will help.
Banned but back. Because why not?