I’ve had my Aiwa AD f770 for going on 38 years now, and not once has it over heated. Short of a belt change, still going strong. Also own its little brother, the ad f660, no issues. These were some of the best cassette decks ever made! Had the king of the hill ad f990 Aiwa but sold it as I needed money at the time. It fetched $900! Back to question, I guess anything is possible, so cannot rule out an issue with over heating. However that is usually a concern with amps.
