DeoxIT on tube pins

Deoxit is more than a cleaner. It “conditions” the metal surfaces. The problem is folks sometimes don’t wipe it off sufficiently after applying. Or are too aggressive in the application. Also, these cleaners and conditioners are nice but real contact enhances are head and shoulders above them, you know, the silver bearing stuff and graphene. The best bang for the buck is clean all contacts in the house with alcohol. Put your backs into, boys!

The main problem you see is contact enhancer getting onto the top surface of the socket, after it I squeezed out when the tube is inserted after too much enhancer was applied. Where it can possibly cause a short. The top of the socket should be cleaned if necessary.