Noise Filtering Power Distribution Board Assembly Instructions

Eurorack Distro Board

Eurorack Distro Board

Thank you for purchasing the Synthrotek Noise Filtering Eurorack Power Distribution Board.  This is an intermediate build. You will need a fine tip soldering iron, a very steady hand and experience.  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 or these instruction pictures alone. Also sometimes we cannot get the exact pictured components, so please look over your parts and check the codes first.

Lets begin!


Populate the 3 resistors then turn over on a firm surface to solder and clip leads.

Distro Board Resistors

Distro Board Resistors


LEDs are polarized components, make sure you place the cathode (shorter lead) into the pad with the flat side of the silk screen marking next to it (the same side as the LED1, LED2 and LED3 markings). Do this for all three, turn over to solder and clip leads.

Distro Board LEDs

Distro Board LEDs


Next add the 16-Pin Eurorack Power Connectors in place by matching the key notch with the key indicator on the PCB silk screen. Turn PCB over to solder.  You can populate all of the connectors first then flip the board over with practice. This helps to keep the connectors flush to the PCB. There are a lot of pins to solder and this will take time.  Make sure you do not leave your soldering iron on the pins too long and do not press down on the pins as this can damage the connector.

Distro Board 16-Pin Power Connectors

Distro Board 16-Pin Power Connectors


Place the capacitors in the PCB, solder and clip leads.  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.

Synthrotek has added these power conditioning / noise filtering caps in 3 places on our distro boards to filter both incoming power as well to reduce module to module noise on all 3 rails (+12, -12 and +5).

Distro Board Power Filtering Capacitors

Distro Board Noise Filtering Capacitors


Distro Board Molex Connectors

Distro Board Molex Connectors

You now have the choice to either use the Molex connectors or bare 16 AWG wire for connecting the distro board to other distro boards and/or the power supply module. If you are looking for a more permanent solution or do not want to use the Molex connectors just solder the wire directly to the PCB in their respective marked pads. Synthrotek has 3 ground connections, but if your supply or non-Synthrotek brand power modules have just one ground connection, feel free to just use the one.  If you are using our Molex connection cable system, populate the right-angle Molex connectors to both ends and solder.

Final Distro Board with Molex

Final Distro Board with Molex

CONGRATS! you have now finalized your power distro board(s)!  You can now connect your DC power and test out the boards.   All 3 green LEDs should light up.  If you are having any issues please consult our TROUBLESHOOTING GUIDE.

Thanks for choosing Synthrotek!

Final Eurorack Distro Board

Final Eurorack Distro Board



  1. John says:

    Hi. I’ve got a few of these distro boards with the Deluxe Power 3U module. Am I able to use the 1U Power Panel (from the more recently released Case Power system) with this board? I want to free up the hp space and use my very empty 1U rail. Thanks!

  2. Steve Harmon says:

    Hello John,

    The 1U power tile won’t work for the distro board. the 1U and 3U tiles are specifically for case power since that is a power module and a distro board.

  3. Jean-Sebastien Nicol says:


    I have two finished noise filtering busboard and a super power green.
    My 90w universal ac adaptor (I live in north america) is set to 15 volts. All the supporosed leds are lighting. The tested power on the two distros are:

    +12 = 11.94 volt

    +5 = 4.93 volts

    -12 = -12.02

    Is it ok if the +12 and + 5 rails supply just under the needed voltage?


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