Write-ups of real jobs: the problem, what I checked, what I did and how it turned out.
An original Xbox One had become loud and was getting very hot. Inside, dust had clogged the fan, the grille and the heatsink, and the thermal paste on the processor had dried and cracked. I cleaned it, replaced the paste and tested it over several hours of gaming.
A disc-edition PS5 kept showing its overheating warning and switching itself off during games. Inside I found packed dust and worn-out liquid metal; I cleaned the cooling system, applied fresh liquid metal and tested it with several hours of Marvel's Spider-Man 2.
An office PC slowed down whenever lots of browser tabs were open. It was running on a single 4 GB memory module; I replaced it with two 8 GB modules for 16 GB in dual channel and tested the new memory with MemTest86.
