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a. Let’s start with the two tiny ceramic caps (C4 ,C7).
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Install, solder and clip the leads.
b. Continue with the three film caps (C1 ,C3 ,C6).
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Install
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, solder and clip the leads.
c. Now for the tricky electrolytic caps. Note all the electrolytic capacitors have one leg that is longer
than the other.
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The longer leg is the positive side of the cap. The positive leg (the longer leg)
goes in the square pad. PAY CLOSE ATTENTION TO THIS WHEN YOU ARE INSTALLING THESE
CAPS! It is very easy to install one or more electrolytic caps backwards! If you do, the amp won’t
work correctly! Double check Figure 2 for reference. Figure 2 also has “+” signs where the positive
(longer) lead goes. The negative side of the caps have white stripes pointing to the negative lead.
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12
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f. Continue with the 2.2K (or 2K2) resistor (R13), which is also blue in color and is labeled RED,
RED, BLACK, BROWN, BROWN. The lead spacing on R13 is also abnormal, so bend the
leads the proper length to fit into their holes.
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g. Continue with the 1M resistor (R2), labeled BROWN, BLACK, GREEN, GOLD.
h. Continue with the 820 ohm (or 820R) resistor (R4), labeled GRAY, RED, BROWN, GOLD.
i. Last, install the 4.7K (or 4K7) resistor (R16), labeled YELLOW, VIOLET, RED, GOLD.
j. You should have a whole forest of bent leads coming out the solder side of the board.
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Now
you can turn the board solder-side-up and solder each one to the board.
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k. Now clip each lead with your flush cutters at the solder joint.
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l. Before installing any more components on the circuit board, double check the resistance values
of each of the installed resistors. Set your digital multimeter to the “ohms” or “resistance”
setting, and measure across all of the resistors. Compare the measured value to the listed
value in Figure 2 on the previous page.
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Make sure they are all correct (within 5%) before
moving on!
4. Capacitors: The Percolator uses 3 different types of capacitors: Film capacitors, tiny ceramic
disc capacitors, and electrolytic capacitors. Film and ceramic caps can be installed in either
direction on the circuit board (the legs can be reversed in their holes). But electrolytic caps
are polarized, meaning they will only work when they are installed in the correct orientation.
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7
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Summary of Contents for THE PERCOLATOR
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