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15 

Mounting the PCB Assembly and 

Connecting the DC Adapter Jack 

 

 

 
 
 

Step 1:

  Mount the DC 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 and their solder terminals will appear exactly the same.  You just thread the 

external nut on the outside and the internal nut on the inside.  The picture above is of an 

internal nut DC adapter jack. 

Summary of Contents for Gray 1976

Page 1: ...at 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...

Page 2: ...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 ve...

Page 3: ...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...

Page 4: ...ecklist 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 pa...

Page 5: ...ellow brown Visit www byocelectronics com resistorcodes pdf for more information on how to differentiate resistors Capacitors 1 1n or 001 film 102 on the PCB 1 10n or 01 film 103 on the PCB 1 47n or 0...

Page 6: ...ide 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 jac...

Page 7: ...7 This is what your Gray Overdrive should look like when you are finished...

Page 8: ...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 short...

Page 9: ...se 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...

Page 10: ...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 b...

Page 11: ...11 Step 5 Add the film capacitors These are not polarized and can be inserted into the PCB either way...

Page 12: ...lytic capacitors These are polarized The positive end will have a longer lead and should go in the square solder pad The negative end will have a shorter lead usually with a black or white stripe runn...

Page 13: ...n 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 sid...

Page 14: ...14 Step 8 Add wire to the IN OUT RING and two Ground eyelets Use about 2 inches for each wire This doesn t need to be exact at this point You will trim the wire to length later...

Page 15: ...it may come with either an external thread or internal thread Don t get confused by this They still function exactly the same and their solder terminals will appear exactly the same You just thread th...

Page 16: ...solder side is up Insert the A100k LEVEL and C500k GAIN potentiometers 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...

Page 17: ...ewing 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...

Page 18: ...DC adapter jack to the eyelet on the PCB labeled Connect the SLEEVE of the DC adapter jack to the eyelet on the PCB labeled Connect the battery disconnect terminal of the DC adapter jack to the eyelet...

Page 19: ...19...

Page 20: ...rcuit is on or off When you insert a mono guitar cable into the stereo input jack the sleeve of the cable connects the ring and sleeve of the jack The ring is connected to the negative end of the powe...

Page 21: ...rkings 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...

Page 22: ...the stripped wire so that the strands are tight and then lightly tinned the exposed wire with solder Don t use too much or it will be too thick to pass through the solder lug holes Pass the stripped...

Page 23: ...CB has double sided and plated through hole eyelets so it is okay to solder from the top side of the PCB Try to make your wiring as short and tidy as possible Refer to the picture on page 7 When you r...

Page 24: ...24...

Page 25: ...25 Installing the ICs and Finishing Up...

Page 26: ...Level This controls the overall output volume Gain This controls the amount of distortion Power Supply 9V battery or 2 1mm negative tip 9VDC adapter Current Draw 10mA Input Impedance 470k ohms Output...

Page 27: ...27...

Page 28: ...28 PCB Map The numbers above correspond to the component numbers on the schematic on the previous page...

Page 29: ...riented your LED backwards or you have loose wiring at lugs 1 or 2 3 Problem The pedal works but it is extremely quiet and or has low distortion Reason You probably have one or more of your resistors...

Page 30: ...d pad just to the right of TP1 This is also a good place to put your black probe TP1 9VDC TP2 8 9VDC or just slightly less than TP1 TP3 4 5VDC or about half of TP2 You ll notice that there are numbers...

Page 31: ...31 If you need further technical support please visit www byocelectronics com board copyright 2022 B Y O C Inc...

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