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Introduction

Follow this guide to replace the Motherboard in your Nokia 2780 Flip.

The Motherboard is the main circuit board of the Nokia 2780 Flip and helps all the phone's parts work together, including the screen, buttons, battery, and charging port. If the motherboard stops working, the phone may not turn on, charge, or respond as expected. Replacing the motherboard can help restore the phone if other basic fixes do not solve the problem.

Before you begin the repair, ensure your phone is powered off and unplugged from the charger.

What you need

Step 1 Battery

Nokia 2780 Flip Motherboard Replacement, Battery: step 1, image 1 of 1

Insert an iFixit opening tool into the seam between the back case and the bottom edge of the phone.
If possible, use a plastic prying tool instead of a metal one to reduce the risk of damaging delicate internal components like the battery or motherboard.

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Step 2

Slide the opening tool or spudger around the edge of the phone to release the clips securing the bottom case.
Gently pry the bottom case from the phone to remove it.

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Step 3

Lift the battery up and out of the compartment.
Ensure the replacement battery is a “HE402 1450mAh 3.85V 5.58WH” Li-ion battery.

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Step 4 Motherboard

Nokia 2780 Flip Motherboard Replacement, Motherboard: step 4, image 1 of 2

Nokia 2780 Flip Motherboard Replacement, Motherboard: step 4, image 2 of 2

Use a Torx T5 screwdriver to remove the six visible 1.4 mm screws that secure the internal rear housing.

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Step 5

Insert a plastic opening tool in the seam between the top case and midframe and slide it around the perimeter to release the clips holding them together.
Remove the midframe from the phone.

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Step 6

Place a spudger or an opening tool under the edge of the press connector and pry straight up to disconnect it.
Make sure to pry under the edge of the connector itself, and not under the socket on the board. Otherwise, you risk permanently damaging the socket.
To reconnect, align the connector carefully over its socket and press down with your fingertip—first on one of the short sides, then the other—until it clicks into place. Don't try to force the connector into place. If you're having trouble, reposition it and try again.