Thank you for purchasing the MST Voltage Controlled Low Frequency Oscillator Eurorack module kit!  This is an intermediate build.  If you feel like you can handle it please proceed!  If not, get some help from a friend with experience or purchase a fully completed unit.

ATTN:  Please follow the BOM and these instructions and don’t populate from the PCB alone. Also sometimes we cannot get the exact pictured components, so please look over your parts and check the codes first. Lets begin!

DIODES

Start with the  diodes as shown below, then turn over on a firm surface to solder, then clip your leads.  Diodes are polarized components so you must match the black stripe on your diodes with the white stripe on the PCB silkscreen.

RESISTORS

 Populate first, then turn over on a firm surface to solder and clip leads.  Using a flat rigid card or another PCB can help hold the resistors in place as you turn the board over.

SOCKETS

Place the IC Sockets by aligning the notch with the notch graphic on the PCB Silk Screen.  Turn over on a flat surface and solder into place.

TRANSISTORS & CAPACITORS

Add the ceramic capacitors and the transistors by matching the flat side of the transistors with the flat side on the silk screen, turn over to solder and clip leads. Next, make sure you orient the electrolytic capacitors in correctly.  The longer lead needs to be inserted into the hole that has the “+” marking near it. Solder and clip leads.

 INTEGRATED CIRCUITS & 16-PIN POWER HEADER

Place the ICs in place by aligning the notch with the notch graphic on the PCB Silk Screen and notch on the sockets. Next add the 16-Pin Eurorack Power Connector in place by matching the key notch with the key indicator on the PCB silk screen.  Turn over on a firm flat surface and carefully solder all of the pins.

JACKS & POTENTIOMETERS

After trimming the nubs on your pots (if they are present), place the pots in the board first, turn the board over with the pots in place, and then solder ONLY THE CENTER PIN to the PCB. Do likewise for the jacks now.  Place the the jacks in and on a flat surface ONLY THE CENTER PIN to the PCB.

Now carefully bend the RED LED as shown below.

Place the RED LED in place as shown below (the shorter lead will orient with the flat side on the LED graphic).  DO NOT SOLDER JUST YET! Now place the panel on and over the jacks and pots as shown below.

Tighten down the nuts on the jacks and pots and place in the green LED as shown below (take time to bend the LED leads first). Also push through the red LED in place.

 

MAKE SURE the PCB is perpendicular to the panel and also that the jacks and pots are flush to the PCB.  You heat up the one soldered center pin to make sure this is case.  Once everything is flush finalize the soldering by soldering in the LEDs, Jacks and POTS.  Trim leads that may protrude past the plane of the panel as to not interfere with other modules.

Congrats! You are done with your build and ready for testing.  Thank you for choosing Synthrotek!