LG G7 ThinQ Motherboard Replacement
This guide is for LG G7 ThinQ (model IMEI 358159091436289) phones experiencing rapid on/off cycling, random shutdowns, or screen malfunctioning issues.
- The affected component is the motherboard (Main Board), responsible for controlling all phone functions and sending communications to other components.
- A faulty motherboard can lead to power issues, screen malfunctions, and other problems.
Before starting, ensure the phone is completely powered off and disconnected from any power source.
Step 1 | SIM Card
Locate the SIM card slot on the top right of the phone.
- Insert a SIM card eject tool into the slot's hole and push gently to eject the SIM card tray.
- Remove the ejected SIM card tray from the phone.
- Extract the SIM card from the tray.
Step 2 | Back Cover
Place the phone with the back cover facing upwards.
- Insert each opening pick onto a side of the phone with equal pressure, starting one by one.
- Special note: Loosen adhesive at top near cameras to facilitate case opening.
If picks are too thick, use the Jimmy to begin prying process carefully.
- Use the pick with optimal leverage to pry the back cover away from the phone.
Step 3 | Speaker System
Remove the midframe first by following the teardown video's instructions.
- Use a Phillips #000 screwdriver to remove screws along the perimeter and central area of the phone.
Step 4 | Remove the speaker system
Remove the speaker system using either your fingers or a pair of tweezers.
Step 5 | Motherboard
Ensure the motherboard is completely separated from the battery.
- Using your fingers or tweezers, carefully lift the motherboard out.