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LG Cosmos 3 Motherboard Replacement

简介

This guide is going to be explaining how to replace the motherboard on an LG Cosmos 3 mobile phone. For this replacement, you will only need basic understanding of how electronics are assembled.

你所需要的

  1. LG Cosmos 3 Motherboard Replacement, Motherboard: 步骤 1 中的图像 1，3 LG Cosmos 3 Motherboard Replacement, Motherboard: 步骤 1 中的图像 2，3 LG Cosmos 3 Motherboard Replacement, Motherboard: 步骤 1 中的图像 3，3

    • 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.

    编辑

  2. LG Cosmos 3 Motherboard Replacement: 步骤 2 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 2 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 2 中的图像 3，3

    • Unscrew the six 2 mm screws from under the back panel.

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  3. LG Cosmos 3 Motherboard Replacement: 步骤 3 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 3 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 3 中的图像 3，3

    • 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.

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  5. LG Cosmos 3 Motherboard Replacement: 步骤 4 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 4 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 4 中的图像 3，3

    • Take out the two 3mm screws on the metal plate covering the ribbon cable.

    • Remove ribbon cable cover.

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  6. LG Cosmos 3 Motherboard Replacement: 步骤 5 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 5 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 5 中的图像 3，3

    • Disconnect ribbon cable.

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  7. LG Cosmos 3 Motherboard Replacement: 步骤 6 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 6 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 6 中的图像 3，3

    • Disconnect volume buttons and camera button from the mounts.

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  8. LG Cosmos 3 Motherboard Replacement: 步骤 7 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 7 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 7 中的图像 3，3

    • Remove the motherboard from the rest of phone by prying under the board to the side of the headphone jack.

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  9. LG Cosmos 3 Motherboard Replacement: 步骤 8 中的图像 1，3 LG Cosmos 3 Motherboard Replacement: 步骤 8 中的图像 2，3 LG Cosmos 3 Motherboard Replacement: 步骤 8 中的图像 3，3

    • 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.

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结论

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

6等其他人完成本指南。

2条评论

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 - 回复

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 - 回复

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