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I received my amp little over a month ago and noticing the silver tip on my left channel tube is fading and looks about half way gone. Also the bigger tube on the same channel has developed a black tip at the top. Is this a tube issue or amp issue. I notice in the left earphone when i turn on and off the amp i hear almost faint chimes or bells. I have pictures of the tubes i can post as well but does anyone have any experience with tube amps that can fill me in if this is a regular occurrence with tubes or if i will need to replace.
As for the top of the tube, I have know answer. As for the pins, they get corroded and need to be cleaned. I use Deoxit D100l from Amazon. Costs around $16 but seems to be the "go to" product for the enthusiasts in the know. There is a "home remedy" for cleaning oxidation on metal but I'm not sure what it is. Can anyone help?