03-31-2017, 07:53 PM
You miswired the socket. The plates are pins 3 and 5, yes, but...the filament connects to pins 7 and 8.
http://nj7p.org/Tubes/SQL/Tube_query.php?Type=5X4G
http://nj7p.org/Tubes/SQL/Tube_query.php?Type=5X4G
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Ron Ramirez
Ferdinand IN