Quote:
Originally Posted by electroking
Hi,
Congratulations for the progress. The only tube that is sensitive to position is the
power rectifier. Typically, vertical operation is preferred but horizontal is acceptable
if some pair of pins is in a given plane. Just check a data sheet for the proper tube.
Bye for now.
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Right you are, 5U4 and it looks like pins 1 and 4 need to be in the vertical plane.
I can't imagine it being a design oversight that techs wouldn't tip these on the side for service and testing... so fingers crossed the socket is turned in the correct direction
http://www.triodeel.com/5u4_p1.gif