In the past I have used some DeOx by Caig (brush on) to lightly coat the sockets and tube pins of all my tube amps for what I thought was maintaining good electrical connection and contact. Now I am not so sure. In taking the tubes out I noticed what looks like oily funk around the sockets down below and wonder if this might be the problem by losing tube/socket contact and creating a momentary surge or whatever.
I have a very small set of round files originally intended to clean acy/oxy torch orifices which I use to file bone guitar nuts, and wondered if I would be better off to rough the sockets and pins a bit with this file rather than using the gunk, no matter how well intended....or is the Caig stuff good, even though it leaves a bit of residue?
I am trying to make sure this doesn't happen again and thinking of all possibilities. Could have just been a line surge. Anyone got thoughts on this?