Step 6
– Strip and tin these two wires and solder them to terminals 1 and 7 of V6.
Wiring the Common Chassis Ground
Step 1
– Cut a 1 1/2” length of 16AWG buss wire and insert this wire
between the solder terminal on the power transformer mounting bolt
and the common solder terminal of the can capacitor (photo 5.12a).
Step 2
– Solder both ends of this buss wire to both terminals. At this time,
solder the green with yellow striped wire from the power transformer to the terminal.
Preliminary Wiring of V4 & V5 Tube Sockets
Step 1
– Cut a 3 1/2” length of 20AWG yellow wire.
Step 2
– Strip and tin both ends approximately 1/8”.
Step 3
– Solder one end of this wire to pin 3 of V4.
Step 4
– Tack solder the other end of this wire to pin 3 of V5.
Preliminary Wiring of V3 Tube Socket
Step 1
– Cut a short 1” length of 20AWG buss wire.
Step 2
– Install a short 1/2” length of salvaged insulation over this wire.
Step 3
– Tack solder this jumper in place between pin 3 to pin 8 of V3.
Step 4
– Tack solder a 220K / 1/2W resistor between pins 1 and 6 on the
back of tube socket (photo 5.14a).
Preliminary Wiring of V2 Tube Socket
Step 1
– Cut a short 1” length of 20AWG buss wire (photo 5.15a).
Step 2
– Install a short 1/2” length of salvaged insulation over this wire.
Step 3
– Tack solder this jumper in place between pins 3 and 8 of V2.
5.12
photo 5.12a
5.13
5.14
5.15
NOTE
“Tack” soldering is a way to make a temporary solder connection with the minimal use of
solder. In this way, a wire is held in place and the terminal is left open for further assembly.
By removing a small length of insulation from a wire, the insulation can be “salvaged” for
use as an insulator with buss wire connections, especially across the back of the tube
sockets.
NOTE
photo 5.13a
20 TubeDepot.com
V4
V5
V3
V2
photo 5.14a
photo 5.15a
NOTE
To insure that all connecting wires are well soldered to the common chassis ground, solder
each wire individually being sure that the solder flows well before moving to the next wire.
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