Before change the flame needle always cause noise.
This is first time to change new needle.
Too busy so have half year no clean flame needle.
Below one is new.
Finish change flame needle.
This is more worse flame needle of Another channel .
After long time high temperature and a little bending the flame needle crack away.
Siemens PL519 almost run out left time so I change cathode bias to drive more plasma flame.
Because Siemens PL519 tube is hard to find .