I have been cleaning up my 1950 arvins chaissis up the past 2 days, and had a good full picture almost all the way restored, i put the 5u4 back in, broke the socket! problem solved, turned the set on bbbbbbbbbbbbbbbbzzzzzzz
pop bell top 5u4 dead! one of the very few caps that tested good left in

this is why we do FULL restorations!
also it almost cought on fire! i did get free confetti!