BYOC Gray 1976 User manual

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BYOC Gray Overdrive 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 major 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] 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. If you clearly put very little effort into building
your kit, and made a big mess because you were lazy and impatient, we’re
not going to feel very inclined to help you. But if it’s clear that you put a lot
of effort into your build, took your time, and follow our tech support
guidelines, we will do our very best to make sure your pedal works. 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. 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”)

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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
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 2022 by BYOC, Inc.

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Gray Overdrive Kit Instruction Index
Parts Checklist……………………………………page 5 - 6
Example Photo……………………………………page 7
Populating the Circuit Board……………………page 8 - 14
Mounting PCB Assembly/Adapter Wiring……..page 15 - 19
Wiring…………………………………………….page 20 - 24
Finish up………………………………………….page 25
Operating Overview……………………………..page 26
Schematic…………………………………………page 27
PCB Map…………………………………………page 28
Trouble Shooting…………………………………page 29

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Parts Checklist for BYOC Gray Overdrive Kit
Resistors:
1 - 100ohm (brown/black/black/black/brown)
2 - 4k7 (yellow/purple/black/brown/brown)
2 - 10k (brown/black/black/red/brown)
2 – 22k (red/red/black/red/brown)
2 - 470k (yellow/purple/black/orange/brown)
1 – 1M (brown/black/black/yellow/brown)
Visit www.byocelectronics.com/resistorcodes.pdf for more information on how to
differentiate resistors.
Capacitors:
1 - 1n or .001µfilm (102 on the PCB)
1 - 10n or .01µfilm (103 on the PCB)
1 - 47n or 0.047µfilm (473 on the PCB)
1 – 4.7µf aluminum electrolytic
1 - 10µf aluminum electrolytic
Visit www.byocelectronics.com/capcodes.pdf for more info on how to differentiate
capacitors.
Diodes:
2 - 1N4148 (small orange glass with black stripe)
IC's:
1 - 741 op amp
1 - 8 pin socket

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Potentiometers: Be sure to snap off the small tab on the side of each panel mounted
pot.
1 - A100k (LEVEL)
1 - C500k (DRIVE)
Hardware:
1 - drilled enclosure w/ 4 screws (optional)
1 - BYOC Gray Overdrive PCB
1 - 3PDT footswitch
2 - knobs (optional)
1 - AC adaptor jack (optional)
2 – ¼” jacks
1 - red LED (optional)
1 - battery snap
4 - bumpers
hook-up wire

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This is what your Gray Overdrive should look like when you
are finished.

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Populating the Circuit Board
STEP 1: Add the diodes. Be sure to match the end of the diode with the stripe to the
layout on the PCB. The stripped end should go in the square solder pad.
FYI, the order in which these instructions tell you to populate the PCB is based on the
profile height of the components. You start with the shortest profile and work up to the
tallest. This is done so that when you flip the PCB over to solder, the components do not
fall out.

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STEP 2: Add the resistors. Resistors are not polarized, so it does not matter which end
goes in which solder pad. Take your time and be sure not to confuse similarly banded
resistors such as the 4k7 with the 470k . Sometimes, certain colors can be very difficult
to distinguish from batch to batch. For example, sometimes the red bands in one batch
may look very similar to brown. If you are having trouble differentiating color bands,
sometimes it’s easier to measure the resistance using a digital multimeter.

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STEP 3: Add the 8 pin IC socket. ONLY SOLDER THE SOCKET! NOT THE
ACTUAL IC! This is a socket. The sockets get soldered to the PCB. The ICs get
inserted into the sockets. The actual IC chip itself, never gets soldered. You will insert
the IC into the socket after the entire pedal has been built.
See page 25 for instructions on how to install the IC into the socket.