How to Change to 12V Power Supply

Written By: Meagan Tobias
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How to Change to 12V Power Supply

Difficulty

Easy

Steps

7

Time Required

5 minutes

Introduction

    • Remove the modem so only the open-storm board remains. This is to prevent accidentally frying the modem.

    • Remove the JP1 and JP2 jumpers

    • Plug in the 12V power source

    • Using a multimeter, touch the ground to any of the ground pinouts on the board and measure the JP1 and JP2 jumpers

    • You should see 12V on the middle and bottom pin of JP1 and 12V on the bottom pin of JP2. The top pin of JP2 should be ~ 3.6V

    • If ~ 3.6 V measured on top JP2 jumper, then add jumper in new position.

    • JP2 powers the modem so it's very important that it is not supplied the higher voltage, otherwise the modem will fry.

    • Plug in the 12V power supply again and see if the JP2 jumper measures ~ 3.7V

    • Unplug the power source and plug in the modem.

    • Be vary careful to not skip a modem pin when plugging in and that it is oriented in the correct direction.

    • Power back on the board and wait to see a green light on the modem (indicating that it is properly powered and trying to connect to the internet).

Conclusion

To revert back to 3.7V power, flip back the 2 jumpers to how they were at the start of the guide.

Author

Meagan Tobias

Member since: 29/01/19

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