ColoredThro v1.0
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7
Build sequence
Soldering this board can be very complicated for some people since the solder pads are very close
together. Use a magnifying glass to make the job easier. The trick to soldering a PCB is to work from
small to big components. My building sequence suggestions in this section are based on the parts I
used myself. Sometimes some components are smaller (or bigger) so always use your own common
sense and change the order accordingly. Usually capacitors can differ a lot in size depending on their
rating and value.
Note:
Do not blow on your solder in an attempt to cool it down. That can result in a bad join that
might corrode!
Start by soldering the resistors except for R4, R6 and R14 (unless it is jumped). Next come the diodes
D2, D3 and D4 and then the MLCC capacitors. If needed you can create a jumper using a spare piece
of lead from a resistor or diode.
If you want to experiment with other transistors then you could socket them instead of soldering
them to the board. You’ll need a some 20 SIL sockets, break off the sockets and solder them to the
board. Now is the time to solder these sockets on the PCB as well as the socket for the IC. Place the
transistors and IC once you are finished with all soldering and off board wiring!
Now continue by soldering small SMF and MKT capacitors then solder the diodes D5 and D6 and the
VR trimpots.. The rest of the resistors R4, R6 and R14 come next and should be mounted upright.
Ditto for D1. Next you can solder D5 and D6 and then finish with soldering the electrolytes.
I suggest you now drill the holes in your enclosure so you can use it during the off board wiring.
Note:
Really take some time to determine where to place the pots, switches, jacks and PCB in the
enclosure before you start drilling. Measure twice, drill once.
You are almost ready to rock, well… not really. The difficult part starts now.
Besides the components mentioned in the Bill Of Materials table, you will need:
2 input jacks
. 2 mono jacks if you are not going to use a battery but only the 9V adapter. 1
mono (for output) and 1 stereo jack (for input) if you will be using both a 9V battery and the
9V adapter.
2 x 3PDT footswitch
(9 pins)
2,1mm DC jack
(isolated).
9v battery clip
(optional).
22 gage stranded hook-up wire.
LED holders.
This enables you to mount the LEDs in the enclosure.
2 x LED (3mm or 5mm depending on your taste)
Hammond 1590BB
case (or similar) in your favorite color.
