Overheating, jet-engine fan noise, and thermal paste degradation
The PS4 Pro's thermal situation is one of the most well-documented in consumer electronics. The console was already running at the upper limit of its cooler's capability at launch with fresh thermal paste — after eight or nine years of heat cycling, the original paste on the APU die has typically dried to a point where it provides minimal thermal transfer. The result is a console that sustains fan speeds approaching maximum during gaming sessions, runs uncomfortably hot to the touch on the exhaust side, and may shut down during demanding titles. Thermal paste replacement, combined with cleaning the heatsink fins and fan, is the single most impactful PS4 Pro repair and should be performed on any unit showing heat-related symptoms.
