Chosen Solution

It looks like a IEC C7 polarized, but that won’t fit. As far as I can tell, the prongs are the same width apart, but it just won’t go on. This is an old boombox, 90’s? CD and cassette. RCD175-B

I’m not sure where you’re from. I also don’t know much about these. But a quick google search bought this up https://www.rcaaudiovideo.com/power-char… 🤷🏻‍♂️