http://www.GuitarAmplifierPCBs.com
Plexi SE PCB Valve Junior Conversion
Version 2
Build Manual
23 August 2009
7 of 34
5.2 Remove the EVJ’s Stock Components
A few of the stock EVJ parts have to be replaced. The tubes, tube retainers, and
stock circuit board need to be removed.
5.2.1 Remove the Tubes and Tube Retainers
It’s as simple as:
•
lift the tube retainer off the power tube,
•
turn the retainer shield until the spring lifts the shield off the per-amp tube,
•
pull the tubes out, and
•
unclip the power tube retainer.
These items can be discarded. They will not be used later in the build.
Now that the tubes and their hardware have been
removed we can take a look inside. This is a version 2
EVJ. You can tell by the green board and the rectified
DC heater supply. Version 3s have a black board.
5.2.2 Remove the Output Transformer from the Chassis
One mounting location for the circuit
boards falls near the edge of the stock
output transformer. So, the output
transformer needs to be unscrewed
from the chassis and pushed aside.
