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LG Optimus L90 Motherboard Replacement

Archived Guide
This guide is retained solely for historical purposes. Use the updated version of the guide to perform your repair.

Introduction

Use this guide to replace the motherboard of the LG Optimus L90 Motherboard. The motherboard is a crucial component that allows interaction between other parts of the device.

What you need

  1. LG Optimus L90 Motherboard Replacement, Battery: step 1, image 1 of 3 LG Optimus L90 Motherboard Replacement, Battery: step 1, image 2 of 3 LG Optimus L90 Motherboard Replacement, Battery: step 1, image 3 of 3

    • Carefully slide an opening pick between the the rear cover and the body of the phone.

    • Using the pick, separate the cover from the back of the phone.

    • Remove the rear cover.

    Edit

  2. LG Optimus L90 Motherboard Replacement: step 2, image 1 of 2 LG Optimus L90 Motherboard Replacement: step 2, image 2 of 2

    • Insert a plastic opening tool int o the small recess at the bottom of the battery.

    • Use the plastic opening tool to lift up the bottom of the battery.

    • Remove the battery from the phone.

    Edit

  3. LG Optimus L90 Motherboard Replacement, Motherboard: step 3, image 1 of 2 LG Optimus L90 Motherboard Replacement, Motherboard: step 3, image 2 of 2

    • Remove the eleven JIS #000 screws securing the midframe to the phone.

    Edit

  5. LG Optimus L90 Motherboard Replacement: step 4, image 1 of 3 LG Optimus L90 Motherboard Replacement: step 4, image 2 of 3 LG Optimus L90 Motherboard Replacement: step 4, image 3 of 3

    • Using an opening pick, carefully separate the midframe from the motherboard.

    Edit

  6. LG Optimus L90 Motherboard Replacement: step 5, image 1 of 3 LG Optimus L90 Motherboard Replacement: step 5, image 2 of 3 LG Optimus L90 Motherboard Replacement: step 5, image 3 of 3

    • Disconnect the flex cables (gold tags with prongs) from the motherboard.

    Edit

  7. LG Optimus L90 Motherboard Replacement: step 6, image 1 of 2 LG Optimus L90 Motherboard Replacement: step 6, image 2 of 2

    • Disconnect the thin black cable in the bottom-right corner of the phone.

    Edit

  8. LG Optimus L90 Motherboard Replacement: step 7, image 1 of 3 LG Optimus L90 Motherboard Replacement: step 7, image 2 of 3 LG Optimus L90 Motherboard Replacement: step 7, image 3 of 3

    • Gently pry the motherboard away from the phone.

    Edit
Conclusion

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

5 other people completed this guide.

Author

with 3 other contributors

Alex Arruda

Member since: 03/04/16

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Team

UMass Dartmouth, Team 3-5, Bhusal Spring 2016 Member of UMass Dartmouth, Team 3-5, Bhusal Spring 2016

UMASSD-BHUSAL-S16S3G5

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7 Guides authored

One Comment

excelente, ideia de aos iniciantes

adriano - Reply

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