Connecting The Right Channel Amplifier Module - DYNACO STEREO 120 Updating Instructions

b. From the solder side of the board, insert the left channel white wire
through the left channel INPUT eyelet and solder it on the component
side.
4. Solder the black wire coming from the star ground to the remaining INGND of
the left channel amplifier.
5. Solder the black wire coming from the left channel black speaker binding post to
one of the OGND terminals of the left channel amplifier.
6. Solder the white wire from the left channel red speaker binding post to the OUT
eyelet of the left channel amplifier.
7. Check your work. One OGND terminal will not have a wire, and the following
eyelets on the PCB should each have a wire:
a. VCC
b. PGND
c. IGND
d. IGND
e. INPUT
f. OGND
g. OUTPUT
8. Make sure that the bottom lip of the heat sink is clean, and also the place where it
mounts to the chassis. Place a line of thermal compound along the bottom of the
short part of the heat sink. Smear it into a thin film using a finger.
9. Mount the heat sink to the chassis using salvaged 6-32x1/2" hardware. Remember
that the outside mounting screw also carries a mounting foot.

Connecting the Right Channel Amplifier Module

1. Set the right channel amplifier board in place. Don't mount it to the chassis yet.
Note that the new PCB should face the center of the amplifier chassis.
2. For the red and black twisted pair that powers the right channel board:
a. From the solder side of the board, insert the right channel red wire through
the right channel VCC eyelet and solder it on the component side.
b. From the solder side of the board, insert the right channel black wire
through the right channel PGND eyelet and solder it on the component
side.
3. For the black and green twisted pair that brings signal to the right channel board:
c. From the solder side of the board, insert the right channel black wire
through the right channel INGND eyelet and solder it on the component
side.
d. From the solder side of the board, insert the right channel green wire
through the right channel INPUT eyelet and solder it on the component
side.
4. Solder the black wire coming from the star ground to the remaining INGND of
the right channel amplifier.
5. Solder the black wire coming from the right channel black speaker binding post to
one of the OGND terminals of the right channel amplifier.
6. Solder the white wire from the right channel red speaker binding post to the OUT
eyelet of the right channel amplifier.
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