PS3 Slim was running hot & freezing. Went to clean out and replace thermal paste, found previous owner spilled soda all into the console. Cleaned everything, reassembled and runs like a champ! :
What stock thermal paste looks like in a 12 year old PS3 : r/PS3
Why Console Thermal Paste Needs Replacing (A Common Oversight...) Possible YLOD or RROD Fix/repair. - YouTube