Are you facing display light problem on Realme C21Y (RMX3263)? For the malfunctioning of your customer’s mobile if the display light is not lit in the phone, the display light repair method shown in this article is the right tested display light solution found in the motherboard. In this article, the details of the method are given, so it will be clear to all mobile repair experts.
Common Realme C21Y Display Light Problems
- The screen turns on, but the backlight is dead.
- You can hear sounds or vibrations, but nothing is visible.
- Dimming, flickering, or no light even after LCD replacement.
Why Does Display Light Fail?
Display light issues usually happen due to:
- Water damage or moisture on the motherboard.
- Dropping the handset or physical shock.
- Faulty LCD connector or broken tracks.
- Damage to key components like LED drivers or the display coil.
Realme C21Y (RMX3263) Backlight Ways Display Light Problem Solution
The diagram above clearly identifies the Realme C21Y motherboard, highlighting the key points for fixing the display backlight. Dashed lines indicate the test points, jumper links, and the locations of components to check if you suspect a breakdown or failure in the circuit. Always consult the diagram before proceeding with any micro-jumper operations. It is crucial to note these important points.
:
- VPH_PWR (Main Power Supply)
- LED+ and LED– tracks (Backlight positive and negative tracks)
- Display IC (driver IC responsible for controlling backlight output)
- Related coils and capacitors in the section of the display light
- Connector pins (check that no pins are bent, missing, or rusted)
Pro Workshop Tips: –
- Always use a hot air station on low setting (260-280 °C) when working close to display ICs / coils.
- Always check new coils / caps after soldering up, with a LCR tester being preferred.
- Only replace quality original parts, for spares on ICs, look in your local tech market or try the official Realme service centre.
- Cross-check the jumper way solutions on YouTube and on technician forums provide extra tips to repair.
- If IC numbers don’t relate, compare placements (not through solder glass) and the surrounding location of components for compatibility.
If you experience any of the above-mentioned symptoms, you can try the following repair steps to fix the damage.
1. Change or Replace Screen: If you have a damaged screen, such as cracks or breaks, replacing the LCD part with a new, functional one is a possible solution.
2. Check Display Lines and Socket: If your Realme C21Y (RMX3263) backlight is damaged due to water damage, you may need to disassemble the phone and check the display lines and socket for any corrosion or rust. Cleaning any corrosion and repairing any broken paths with a jumper method can help fix the issue.
3. Check and Replace Internal Components: If the LCD and display lines are in good condition, but you are still experiencing backlight damage, the problem may lie with internal components. Consult a guide, such as one provided by the Mobilerdx Team, to help diagnose and repair the issue.
Check each component for defects. If a component is found to be defective, replace it with a matching type and value. Inspect the diodes and marked coil components on the diagram image, as these are often the cause of backlight display problems when damaged.
