Quote:
Originally Posted by bandersen
Right away I found one half of a 6CG7 completely dead. Weird. The filament is glowing but it has 0 emissions. I replaced it and the sync is solid now
|
I have a $2 pocket knife with a serrated edge that works perfectly for scraping oxidation from tube pins. They need to be shiny. The typical dull gray look is a problem in the works. Many times with a tester you can hold down the "test" button and wiggle the tube around and that dead section will come to life proving that the tube needs cleaning. Otherwise there would have to be an internally open connection which is possible, but unlikely.