"Oppo A5 2020 Power & Volume Keys Problem Solution | Button Not Working Fix 2025"
🔧 Oppo A5 2020 Power & Volume Keys Problem Solution | Button Not Working Fix | Hardware Jumper Guide
In this video, we provide a complete hardware repair solution for the Oppo A5 2020 when the Power button, Volume Up, or Volume Down keys stop working. These issues may be caused by a damaged flex cable, broken button connection, water damage, or a broken track on the PCB.
You will learn:
How to identify power & volume key faults
How to test each button using a multimeter
How to repair damaged button flex or solder joints
Jumper solutions for broken power or volume key tracks
Tips to prevent further damage during rework
🧰 Tools You’ll Need:
Digital Multimeter
Hot Air Station
Jumper Wire
Flux + Soldering Iron
Microscope (optional for line repair)
📌 This method is tested for Oppo A5 2020 (CPH1931 / CPH1933) and other Oppo phones with similar key layouts.
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🔢 30 Step-by-Step Instructions:
Power off the device completely.
Remove SIM tray and back cover.
Disconnect the battery connector.
Remove the motherboard shielding.
Locate the power and volume key section.
Identify the power & volume key flex connector.
Test continuity on each key using multimeter (beep test).
Check flex strip for any cuts or tear.
Replace damaged button strip if needed.
Test button response in diode mode.
If keys are okay, check PCB side connector.
Clean key pads with alcohol.
Trace button lines with layout tool or ZXW.
If a line is broken, scratch PCB to expose copper pad.
Solder jumper wire from button to correct point.
Use thin insulated wire to avoid shorts.
Avoid overheating other components.
Secure jumper with UV glue if necessary.
Reconnect battery and test keys.
If still not working, recheck all connections.
Check for corrosion near key connector.
Reflow the connector if loose.
If button works on flex test, but not in phone, track is broken.
Check all ground points around button connector.
Ensure button signal reaches CPU.
In case of water damage, clean with IPA and dry.
Test each key individually before closing.
Reassemble phone fully.
Do final test in recovery and settings.
Confirm long press power and both volume buttons function.
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