Now Reading: OnePlus 8 Pro Charging, LCD & Main flex Replacement Guide | DIY Repair
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OnePlus 8 Pro Charging, LCD & Main flex Replacement Guide | DIY Repair
Today, we’re diving into a complete OnePlus 8 Pro repair, where we replace the charging port flex, LCD flex, and main flex cable. If your device has charging issues, display connection problems, or intermittent signal drops, this guide will walk you through every step from opening the phone to sealing it back up.
Before we begin, make sure you have the proper tools—heat gun or heat pad, plastic pry tools, suction cup, precision screwdrivers, and replacement adhesive. With those ready, let’s get into the repair.
Repair Overview
- Device Type: Android Smartphone
- Model: OnePlus 8 Pro
- Type of Repair: Charging, LCD & Main flex Replacement
Repair Difficulty : ★★★★☆☆☆☆☆ (4/10 – Moderate)
Estimated Time: 35–55 minutes
Reasons for Charging, LCD & Main Flex Replacement
- Device not charging or charging intermittently
- LCD display unresponsive or flickering
- Device buttons or connectivity issues due to faulty main flex
- Device not recognizing SIM card or shows network problems
- Physical or water damage affecting internal flex cables
Before You Begin
Compatibility and Model Numbers
- Oneplus 8 Pro
This repair guide based on OnePlus 8 Pro
Model Numbers | IN2023, IN2020, IN2021, IN202
Tools Required
- Mobile phone heating pad or hairdryer/heat gun
- Plastic pry tool / card pry
- Suction cups
- Phillips #00/#000 screwdrivers
- Torx T3 / T4 Screwdriver
- Flathead Screwdriver
- Tweezers (for connectors)
- B7000 glue or double-sided adhesive (for back cover)
- Rubber bands or bonding clips to secure the back cover
Using proper tools reduces the risk of damaging the phone.
How to Find Tools and Parts
- Heat Mat / Heating Pad – https://amzn.to/3H0tHzJ
- Portable Heat Gun – https://amzn.to/4mszih1
- Clamps https://amzn.to/3GYJT4w
- STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
- Suction Cup https://amzn.to/3UVb6YR
- Silicone Work Repair Mat https://amzn.to/45Emz5l
- Glue | Adhesive https://amzn.to/47UTKmE
✅ Protect Your Oneplus 8 Pro
- Best Rated Cases https://amzn.to/47fTWen
- Top Screen Protection https://amzn.to/4qzYIwi
Step 1: Power Down and Open Your Device
Begin by powering off your OnePlus 8 Pro completely. Carefully remove the back cover using gentle heat along the edges to soften the adhesive. Use a plastic prying tool to lift the cover without cracking it.
Step 2: Remove Logic Board Frame and Secondary Components
After the back cover is off, unscrew and remove the logic board frame. Next, remove the secondary board cover, followed by the secondary board itself. These components house the SIM card slot and other important connectors, so handle them carefully.
Step 3: Remove the Battery
With the internal boards out of the way, gently remove the battery. Take extra caution to avoid puncturing or bending it. If your battery is swollen or damaged, consider replacing it during this repair for maximum device longevity.
Step 4: Remove Broken Flexes
Now it’s time to tackle the core issue. Remove the broken main flex and LCD flex first. Then carefully disconnect and remove the damaged charging port flex. Take note of how each flex connects to the motherboard for smoother reassembly.
Step 5: Install New Charging Port Flex
Place the new charging port flex in position, making sure it’s aligned perfectly with the connectors. Test the connection if possible before proceeding to the next step.
Step 6: Install New LCD & Main Flex
Next, carefully place the new LCD and main flex into their designated positions. Ensure all connectors are seated properly to avoid display or touch issues later.
Step 7: Reassemble Secondary Boards
Place the secondary board back into its slot, reconnecting the SIM card slot and any additional connectors. Secure the secondary board cover, which includes the loudspeaker and buzzer components.
Step 8: Reinstall Battery and Logic Board Frame
Carefully put the battery back in place and reconnect any connectors. Then, reattach the logic board frame, making sure all screws and components are securely fastened.
Step 9: Close Your Device
Finally, press the back cover back onto the device, ensuring it adheres firmly and evenly. Power on your OnePlus 8 Pro and test the charging port, LCD, main flex functionality, and touch responsiveness.
Frequently Asked Questions (FAQ)
Q1: Can I replace the charging port and LCD flex myself if I’m not a professional?
Yes! With patience, the right tools, and careful handling, this is a doable DIY repair. Just make sure to follow step-by-step instructions and keep all screws and connectors organized.
Q2: How long does the replacement process usually take?
For a moderately experienced DIYer, the process typically takes 1–2 hours. If it’s your first time, take your time—rushing may damage components.
Q3: Do I need to replace both the LCD and main flex at the same time?
Not necessarily. If only one component is damaged, you can replace it individually. However, replacing both during this repair ensures optimal performance and prevents future issues.
Q4: Will this repair void my warranty?
Yes. Any self-repair usually voids the official OnePlus warranty. Proceed only if you’re comfortable with that.
Q5: Where can I get reliable replacement parts?
Purchase parts from trusted suppliers or verified online stores. Make sure the components are specifically for OnePlus 8 Pro to avoid compatibility issues.
Q6: Can I test the device before sealing it completely?
Absolutely! After reconnecting all flex cables and before closing the back cover, power on your phone to ensure charging, touch, and display functions work correctly.
Troubleshooting After Replacement
1. Device Not Powering On
- Ensure the battery is properly connected.
- Check that the main flex and LCD connectors are securely seated.
- Inspect for any bent pins or loose screws that might be shorting the board.
2. Charging Issues Persist
- Verify that the new charging port flex is aligned correctly.
- Clean the charging port of any dust or debris.
- Test with a known working cable and adapter.
3. Touchscreen Not Responding
- Make sure the LCD flex is fully inserted into its connector.
- Check for any debris or misalignment under the display.
- Perform a soft reset to refresh the system.
4. No Sound from Loudspeaker/Buzzer
- Ensure the secondary board cover is seated properly.
- Check that the speaker and buzzer connectors are fully attached.
5. Camera or Other Functions Malfunction
- Double-check that all connectors you removed during disassembly are reattached.
- Some sensors may need a device restart to calibrate properly.
Pro Tip: Keep your tools, screws, and removed components organized. Often, post-repair issues arise from small connectors or screws being misplaced.
Replacing the Charging port, LCD, and Main flex on the OnePlus 8 Pro is a moderate-level repair that can significantly restore your device’s charging, display, and overall functionality. With patience, proper tools, and careful handling, you can complete this repair successfully at home.
If you found this guide useful, you’re welcome to explore additional repair tutorials to help keep your devices operating at peak performance.
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