Cleaning Tube Sockets

[mstaton]

I take a used tube and use needle nose pliers with serrated teeth and squeeze each pin to make slight indentations/marks and spray the socket with a cleaner like deoxit and insert the tube and and pull in and out slightly, like sanding with the tube pins. works 100% of the time. Repaired a LOT of Fisher stereo equipment that way when nothing else worked. Fisher tube sockets seem to corrode quite easily.