{Collins} 51S-1

Hi All,

I am trying to bring a 51S-1 back to life. I have tested the tubes and found many showing shorts and I replaced them. The 7543 oscillator tube is also showing a short and I replaced it with a 6AU6. How bad is that? It seems to work. Should I bother buying a 7543? They don't seem too expensive. What are your thoughts?



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