In this article, we will share with you the solution to repair Xiaomi Redmi 7A sound error, lost ringer speaker, speakerphone does not work. This solution can help you troubleshoot and repair your phone.
In this guide, we will discuss how to troubleshoot Xiaomi Redmi 7A audio problems. If your phone has no sound or you are experiencing sound and volume problems of any kind then here are some things that you can try.
To repair the Xiaomi Redmi 7A speaker, you need to first clean the contact pads of the speaker connector on the PCB board if there is corrosion and oxidation. Then test the speaker with a multimeter to easily determine if it's working. If the speaker is confirmed to be ok, you can refer to the solution below and perform the check and test procedure on some components that are linked or connected to the external speaker circuit.
The cause of the sound problem of Xiaomi Redmi 7A
- Buzzer may be faulty.
- Tiny and distorted sound often occurs when there is dust on the diaphragm or when the speaker is faulty.
- The coils may be faulty.
- There is no continuity between the contacts and the speaker coil.
- However, the problem with the speaker's onboard connector, which happens in very rare cases, and there's a one in thousand chance that the speaker problem is caused by a problem with the connector on the board.
Xiaomi Redmi 7A Sound Problem Repair Solution
- Test the speaker with a multimeter. Replace if damaged. Distorted sound is caused by weak speakers or damaged internal coils.
- If the speaker is good and there are no problems, make sure that the terminal is not biased. Then, clean the contact gasket of the buzzer connector to avoid possible oxidation (which can weaken the connection).
- Check each buzzer + and buzzer- corresponding connection path to each component where it is being connected.
- If any speaker + or - is missing then rephrase.
If the mobile phone has water damage problem. Try to find some resistor or capacitor that is missing, on fire or on its motherboard. You can solve it by re-soldering or replacing any damaged or missing parts before replacing. Some timing headphones and its precise points are working fine. But the bell in mounting with the front panel has connection problems. In this case, you can try a wire that connects directly from the speaker's pins to its retaining pins. I have fixed this problem many times by re-soldering the latches of the speaker cushions.
Note: Please note that while every solution posted on our website is tested by one or more members of our team before being posted, we still do not accept any responsibility for any damage it may cause to your mobile phone. Use these repair solutions at your own risk. Thank.
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