See my post of yesterday (Oct. 1 -2022). Welcome to the ROKU cooking club, where their streaming devices get so hot you could cook eggs on them! Just kidding - more like warming up soup. It is my experiential opinion that ROKU devices frequently exhibit a design flaw related to overheating, as evidenced by a high proportion of customer complaints. I don't have an engineering design change (e.g., perhaps a heat diffuser or heat sink & fan) nor do I count beans at the prospect of costing ROKU more to correct the flaw. It seems the folks at ROKU are entrenched on this one, all along the line - they are not about to spend an extra iota of effort or money to fix something that makes so much money for them. If one reads their responses, it smells like cheat cheats are just being copied and pasted just to post SOMETHING in reply to customer complaints.
My work around (NOT a solution to the problem, just a means of mitigating the design flaw) is to simply use a small USB powered fan tie-wrapped to a piece of wire, clamped to a woodcraft shop clamp. I will post another more detailed picture shortly. I tried using an HDMI dongle (small extension cable) to have it out in the air and in the open - no matter, it still would overheat. Good luck
