Bought a broken ps4, need help in identifying what did previous person did?

Seeking Assistance: Diagnosing a Malfunctioning PS4

Recently, I acquired a PlayStation 4 that is unfortunately not functioning as expected. Before I dive into potential repairs, I would appreciate insights on the previous owner’s actions regarding the console.

If you’ve encountered similar situations or have expertise in troubleshooting gaming systems, I would love to hear your thoughts or any advice you might offer. What are common signs of damage or mismanagement that I should look for? Any tips on how to diagnose the issue would be greatly appreciated.

Thank you in advance for your help!