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  1. LG Cosmos 3 Motherboard Replacement, Motherboard: paso 1, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement, Motherboard: paso 1, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement, Motherboard: paso 1, imagen 3 de 3
    • Before completing this step, make sure your device is turned off. Once it is turned off, remove the back cover gently from the phone by prying under the clip near the camera.

  2. LG Cosmos 3 Motherboard Replacement: paso 2, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 2, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 2, imagen 3 de 3
    • Unscrew the six 2 mm screws from under the back panel.

  3. LG Cosmos 3 Motherboard Replacement: paso 3, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 3, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 3, imagen 3 de 3
    • Remove the rear casing by prying along the edge of the keyboard bezel, then along the outside edge near the camera button.

    • Slide out the built in keyboard for part of this step.

  4. LG Cosmos 3 Motherboard Replacement: paso 4, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 4, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 4, imagen 3 de 3
    • Take out the two 3mm screws on the metal plate covering the ribbon cable.

    • Remove ribbon cable cover.

  5. LG Cosmos 3 Motherboard Replacement: paso 5, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 5, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 5, imagen 3 de 3
    • Disconnect ribbon cable.

  6. LG Cosmos 3 Motherboard Replacement: paso 6, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 6, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 6, imagen 3 de 3
    • Disconnect volume buttons and camera button from the mounts.

  7. LG Cosmos 3 Motherboard Replacement: paso 7, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 7, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 7, imagen 3 de 3
    • Remove the motherboard from the rest of phone by prying under the board to the side of the headphone jack.

  8. LG Cosmos 3 Motherboard Replacement: paso 8, imagen 1 de 3 LG Cosmos 3 Motherboard Replacement: paso 8, imagen 2 de 3 LG Cosmos 3 Motherboard Replacement: paso 8, imagen 3 de 3
    • Replace the old motherboard with the new motherboard by reversing previous step, and pressing with plastic tool near ends of board to snap it into place.

Conclusión

To reassemble your device, follow these instructions in reverse order.

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2 comentarios

two keys on the slide out keyboard of my phone are not dead but hard to activate. hope this helps me get into the keypad and fix the problem. Thanks for the info. Randall in Nashville

Randall Daley - Contestar

This was easy to do: we had a Cosmos2 with a broken screen, but the motherboard fit into a Cosmos3 case and worked fine. Unfortunately, though, it won’t connect to the Verizon network anymore, even though the phone number appears in Phone Info (it was working in 2018). I’m thinking this is due to Verizon’s dropping 1G and 2G network support. Any thoughts are welcome!

Jen Morris - Contestar

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