Unsure if this is a capacitor

[dtvmcdonald]

You don't need to remove it. Just resolder it and the other terminals on that strip as
well as the pins on the tube socket. It does have some signs that the wires on the terminal
that cap is soldered to might have flux impeding a good connection. Scrape that off before resoldering.

Also ... since touching something had an effect, unplug the tube, check to see that all the
tube pins look well soldered, clean them, and apply a tiny bit of deOxit before
plugging back in.