It seems there are three likely possibilities: The Roku was defective and could only survive one power cycle, or the power block was defective and fried the Roku, or a cable/connector got yanked "too hard" and broke.
The only Roku LE that I know of was a special edition for Walmart to sell on Black Friday 2021 for $15. It was basically a 2019 Roku Express 3930. As such, I probably wouldn’t put a lot of effort into debugging it. Most here recommend the Roku Express 4K+ 3941 as an entry-level (but good!) Roku.
Banned but back. Because why not?