Bro I swear my ps4 has been like this for years! Maybe it got some kinda damage because I would take it in my foam patted backpack to my friend house every weekend or so but I treated that boy like a king and never dropped it or damaged it as far as I'm aware
Mine does the same. Is 2 years ago that stop to make beep and the ps4 never goes to the floor or receive damage but works so fine now i play in my new PS5
This happened to my PS4 after taking it apart to clean out all the dust. Still works fine. Kinda annoying though if I want to put the ps4 in safe mode to rebuild database and I need to hear the beeps. I have the same background ps2 theme btw!