BYOC Classic Fuzz User manual

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BYOC Classic Fuzz Kit Instructions
Warranty:
BYOC, Inc. guarantees that your kit will be complete and that all parts and
components will arrive as described, functioning and free of defect.
Soldering, clipping, cutting, stripping, or using any of the components in
any way voids this guarantee. BYOC, INC guarantees that the instructions
for your kit will be free of any majors errors that would cause you to
permanently damage any components in your kit, but does not guarantee
that the instructions will be free of typos or minor errors. BYOC, INC does
not warranty the completed pedal as a whole functioning unit, nor do we
warranty any of the individual parts once they have been used. If you have a
component that is used, but feel it was defective prior to you using it, we
reserve the right to determine whether or not the component was faulty upon
arrival. Please direct all warranty issues to:
[email protected] This would include any missing parts
issues.

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Return:
BYOC, Inc. accepts returns and exchanges on all products for any reason, as
long as they are unused. We do not accept partial kit returns. Returns and
exchanges are for the full purchase price less the cost of shipping and/or any
promotional pricing. Return shipping is the customer’s responsibility. This
responsibility not only includes the cost of shipping, but accountability of
deliver as well. Please contact [email protected]om to receive a
return authorization before mailing.
Tech Support:
BYOC, Inc. makes no promises or guarantees that you will successfully
complete your kit in a satisfactory manor. Nor does BYOC, Inc. promise or
guarantee that you will receive any technical support. Purchasing a product
from BYOC, Inc. does not entitle you to any amount of technical support.
BYOC, Inc. does not promise or guarantee that any technical support you
may receive will be able to resolve any or all issues you may be
experiencing.
That being said, we will do our best to help you as much as we can. Our
philosophy at BYOC is that we will help you only as much as you are
willing to help yourself. We have a wonderful and friendly DIY discussion
forum with an entire section devoted to the technical support and
modifications of BYOC kits.
www.byocelectronics.com/board
When posting a tech support thread on the BYOC forum, please post it in the
correct lounge, and please title your thread appropriately. If everyone titles
their threads “HELP!” then it makes it impossible for the people who are
helping you to keep track of your progress. A very brief description of your
specific problem will do. It will also make it easier to see if someone else is
having or has had the same problem as you. The question you are about to
ask may already be answered. Here is a list of things that you should
include in the body of your tech support thread:
1. A detailed explanation of what the problem is. (more than, “It doesn’t
work, help”)
2. Pic of the topside of your PCB.
3. Pic of the underside of your PCB.
4. Pic that clearly shows your footswitch/jack wiring and the wires going to
the PCB

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5. A pic that clearly shows your wiring going from the PCB to the pots and
any other switches (only if your kit has non-PC mounted pots and switches)
6. Is bypass working?
7. Does the LED come on?
8. If you answered yes to 6 and 7, what does the pedal do when it is in the
"on" position?
9. Battery or adapter (if battery, is it good? If adapter, what type?)
Also, please only post photos that are in focus.
Copyrights:
All material in this document is copyrighted 2019 by BYOC, Inc.

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Classic Fuzz Kit Instruction Index
Parts Checklist……………………………………page 5
Populating the Circuit Board……………………page 7 - 15
Assembly………………………………………….page 16 - 19
Wiring…………………………………………….page 20 - 24
Finish up………………………………………….page 25 - 26
Schematic…………………………………………page 27
PCB Map…………………………………………page 28

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Parts Checklist for BYOC Classic Fuzz Kit
Resistors: Metal Film | Carbon Composition
1 - 47R (Yellow/Purple/Black/Gold/Brown) | (Yellow/Purple/Black/Gold)
1 - 330R (Orange/Orange/Black/Black/Brown) | (Orange/Orange/Brown/Gold)
1 - 1k (Brown/Black/Black/Brown/Brown) | (Brown/Black/Red/Gold)
2 - 4.7k (Yellow/Purple/Black/Brown/Brown) | (Yellow/Purple/Red/Gold)
1 - 33k (Orange/Orange/Black/Red/Brown) | (Orange/Orange/Orange/Gold)
1 - 100k (Brown/Black/Black/Orange/Brown) | (Brown/Black/Yellow/Gold)
1 - 470k (Yellow/Purple/Black/Orange/Brown) | (Yellow/Purple/Yellow/Gold)
Capacitors:
1 - 150pf Ceramic disc (little yellow or blue round capacitor with ‘151’ on the body)
1 - 103/.01uf film (May say ‘103’ on the body)
1 - 123/.012uf film (May say ‘123’ on the body)
1 - 273/.027uf film (May say ‘273’ on the body)
1 - 104/.1uf film (May say ‘104’ on the body)
1 - 2.2uf aluminum electrolytic
1 - 22uf aluminum electrolytic
1 - 100uf aluminum electrolytic
Diodes:
1 - 1N4001
Transistors:
2 - 2N5088 (or 2N3904, 2N5089 or similar NPN silicon)
Potentiometers: Be sure to snap off the small tab on the side of each pot.
1 - A100k (LEVEL)
1 - B1k (FUZZ)
1 - B10k(BIAS)
Hardware:
1 - drilled enclosure w/ 4 screws
1 - BYOC Classic Fuzz circuit board
1 - SPDT On-Off-On toggle switch
1 - 3pdt footswitch
2 - ¼” Enclosed Audio Jacks
1 - battery snap
hook-up wire

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This is what your Classic Fuzz will look like when you are
finished.

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Populating the Circuit Board
Step1: Add the resistors. Resistors will be blue or tan colored and have multicolored
bands on them. See the parts list above to read the colors to value table. Resistors are not
polarized so they can go in the PCB in either direction.

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Step 2: Add the larger black plastic diode with silver stripe (1N4001). Make sure the
stripe matches up with the layout on the PCB. The cathode (striped end) goes in the
square solder pad. The anode goes in the round solder pad.

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Step 3: Add the transistors. Transistors are the three-leg components with a curved face.
Be sure to line up the curved face on the transistors with the outline on the PCB, as
highlighted below.

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Step 4: Add the film and ceramic disc capacitors. The film capacitors will have two legs
and a red, rounded-square body. The ceramic disc capacitor will also have two legs, but
will usually be blue or yellow and have a circular body. These are not polarized and can
be inserted in any orientation. The ceramic disc capacitor is highlighted in yellow below.

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Step 5: Add the aluminum electrolytic capacitors. The aluminum electrolytic capacitors
will be cylindrical in shape and have two legs. These are polarized meaning there is a
positive and negative side. The longer lead will go into the square hole; this is the
positive side. The negative side will go into the round hole, and usually will have a line
along the body of the capacitor.

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Step 6: Add the battery snap. Thread the solder ends of the battery snap into the strain
relief holes from the bottom solder side of the PCB and out through the top. Insert the
solder ends of the battery snap wires into the topside of their respective solder pads.
Solder on the bottom side of the PCB. Remember the red wire goes in the “+” hole and
the black wire goes in the “-” hole.

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Top of populated board
At this point, your board will look like this. If it doesn’t, go back and fix any issues
you might have.

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Back of populated board
This is what the back of your populated board will look like. Note the clean, shiny
solder joints, the close trim of the back leads, and the lack of solder bridges or stray
bits of solder. If you have long leads on the back-side, or have blobby or dull solder
joints, go back over them with a hot soldering iron, also known as ‘reflowing’ to
achieve a clean solder joint.

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Step 7: Add wires to the IN, OUT, RING, two Ground eyelets, and DC adapter eyelets.
Start by cutting five 2.5” pieces of wire, and three 1” pieces. Strip 1/4” off each end and
tin the ends. Tinning means to apply some solder to the stripped ends of the wires. This
keeps the strands from fraying and primes the wire for soldering. Solder a 2.5” piece of
wire to each of the IN, OUT, RING, and Ground eyelets on the PCB. Solder a 1” piece
to each of wire to the DC adapter jack eyelets on the PCB. Load the wires in from the
top and solder on the bottom of the PCB.

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Main PCB Assembly
Step 1: Mount the AC adapter jack to the enclosure. Your kit may come with either an
external thread or internal thread. Don’t get confused by this. They still function exactly
the same. You just thread the external nut on the outside and the internal nut on the
inside. The picture below is of an internal nut jack.

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Step 2: Flip the PCB over so that the bottom or solder side is up. Insert the B1k (FUZZ),
A100k (VOLUME), B10k (BIAS) potentiometers, the toggle switch, and the LED into
the bottom side of the PCB. DO NOT SOLDER ANYTHING YET!!! The LED will
have one lead that is longer than the other. MAKE SURE THE LONGER LEAD GOES
IN THE SQUARE HOLE.

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Step 3: Hold the PCB in one hand so that the component side of the PCB is in the palm
of your hand and the bottom side with the pots, toggle switch and LED is facing up. Now
use your other hand to guide the predrilled enclosure onto the PCB assembly so that the
pots and LED all go into their respective holes. Once the PCB assembly is in place,
secure it by screwing on the washers and nuts for the pots. Only tighten them with your
fingers. You do not want them very tight yet.
Step 4: Turn the entire pedal over so that the component side of the PCB is facing up.
Lift the PCB up off the pots about 2mm just to make sure that the back of the PCB does
not short out against the pots. Make sure the PCB is level and symmetrically seated
inside the enclosure.
Step 5: Solder the pots, switch, and LED. You will solder these parts on the component
side of the PCB. After you have soldered them in place, be sure to tighten up their nuts.

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Step 6: Connect the TIP (negative) terminal of the DC adaptor jack to the
eyelet on the PCB labeled “-“. Connect the SLEEVE of the DC adaptor jack
to the eyelet on the PCB labeled “+”. Connect the battery disconnect
terminal of the DC adaptor jack to the eyelet on the PCB labeled “(+)”. See
diagram on the next page.

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WIRING
You will want to place the jacks into the enclosure so the sleeve terminal is
facing the right like the picture below. Be sure to remember the lock washers
so the jacks don’t spin on their own.
Step 1: Install the ¼” Enclosed jacks.
Step 2: Install the footswitch. Orient the footswitch so that the flat sides of the solder
lugs are like the diagram below.
NOTE: There are no actual number markings on the footswitch. There are two correct
ways you can orient the footswitch. They are both 180 degrees of each other. Either way
is fine. It does not matter as long as the flat sides of the solder lugs are running
horizontal, not vertical.
NOTE: It may be easier to wire up the foot switch before installing it into the pedal.
There will be more room to work & it will be much easier to thread the lug 4 to lug 9
jumper.