LG Optimus L90 Motherboard Replacement

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.

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.

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

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

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

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

Gently pry the motherboard away from the phone.