How do I remove stored login info from a dead Roku TV?

Hello all. My TCL Roku 32S305 recently died on me. It’s like it’s completely frozen, it won’t turn on, but the indicator light remains on and steady when plugged in. I contacted my warranty to get a replacement. However, a lot of my personal logins (Google, Amazon, Twitch, etc.) are still stored on that TV. What should I do to ensure someone doesn’t get my logins if they manage to restore the TV to a working state after I get rid of it? Thank you.