Section 5: Building The Updated Circuit Boards; Install The Resistors; Figure 6-The First Four Resistors Are Installed With Leads Bent On The Back Side, But Not Yet - DYNACO STEREO 120 Updating Instructions

Section 5: Building the Updated Circuit Boards

This section details the process of building the circuit boards. We start with an overview
on this page. The specifics you need to start building begin on the next page.
In general, you'll start with the components that lay closest to the board, working your
way toward the taller components. You will:

1. Install the resistors

2. Install the small capacitors
3. Install the diodes
4. Install the LEDs
5. Install the medium size capacitors
6. Install the transistors
7. Install the big capacitor
8. Wind and install the output inductor.
9. Install the LM3886.
Install the Resistors
In general, you install the resistors by placing the body on silk screen side of the board,
and the leads through the indicated holes. Bend the leads over on the back of the board to
keep the resistors from falling out until your solder them in place. Try to bend the leads in
a direction that won't lead to solder bridges between traces that should remain
disconnected.
We recommend the following procedure:
1. Insert all the resistors of the same value, e.g. R14, R19, R20, and R21.
2. Bend the leads as described above.
3. Solder the leads on the back of the board.
4. clip the leads.
Figure 6-The first four resistors are installed with leads bent on the back side, but not yet soldered.
Turn the page for specific directions about each resistor.
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