Specifications

http://www.ppwatt.com
Tweed 5E3 PCB Valve Junior Conversion
Build Manual v3.0 13 Feb 2011
9 of 40
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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
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x lift the tube retainer off the power tube,
x turn the retainer shield until the spring lifts the shield off the per-amp tube,
x pull the tubes out, and
x 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
To remove the output transformer,
disconnect its wire leads from the
main amp circuit board and the
output jack circuit board.
Pull these two spade connectors
from the main circuit board.
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Push/Pull OT in the build rather
than the Single Ended OT used
in a VJr.
However, you might want to label them (Input 1,Input 2, 4 out, 8 out, 16 out &
Ground) just in case you want to use it in another SE build at a later time.