A quick note about this page.  Do not attempt this procedure if you don not know what you are doing.  Although the risk or personal injury or damage to your pedal or connected gear are very low, it is possible.  The biggest risk would be shorting out your power supply.  Some power supplies have over current protection, and some don't.  If you cause a short, the transformer in your power supply could melt, and explode,  electrocute you and/or fry your pedal.  WE WILL NOT BE HELD LIABLE.  Proceed at your own risk. To reduce risk use a battery instead of a power supply.

All Liquid Sunshine pedals are biased before they are sold.  Biasing is done by measuring the voltage at the test pins below the trim pots, and adjusting accordingly. 

If you have tried adjusting them manually or bought your Liquid Sunshine use, and would like to reset your pedal to factory specs, it is easy and you can do it at home. 

There are only a couple things you need: A small screw driver, and a digital multi-meter.

Each trim pot calibrates the bias voltage on the test pin directly below it. 

The pedal must be on, and preferably in bypass mode to perform the test.  Make sure that you have it plugged in to a 9VDC regulated power supply, or a battery.  An cable must also be plugged in to the input for the pedal to truly be on. (the one you use with your guitar will be fine)

Once you you have the pedal powered up put your negative (usually black) test lead in one of the screw holes in the corner of the pedal case.  Then take the voltage reading of the first pin and adjust the trim pot above it until the voltage reads half of the supply voltage to the pedal (usually around 4.5 volts, but not all batteries read exactly 9 volts. When they are fresh they are usually a little over 9 volts)  Next, repeat the procedure again for the next trim pot and test pin.  Finally play a little with your guitar, and test it out.  You can adjust the trim pots a little to taste, but adjustment should be very very small.