Why the speaker on the Redmi Note 5 Pro starts to “hrizzle” and what to do about it
Your Xiaomi Redmi Note 5 Pro speaker suddenly starts to make muted sounds, wheezing or stop playing bass frequencies altogether? 90% of the time, the problem is not hardware failure, but simple pollution. Dust, villi from your pocket, water leaks from moisture — all this gradually accumulates in the speaker's grille, blocking sound waves. Especially vulnerable is the lower speaker (also multimedia), as it is located next to the charging connector, where garbage often gets.
Symptoms of a contaminated speaker on the Redmi Note 5 Pro are easily confused with software failures, for example, many users first try to reset the audio settings in Settings. → Sound or re-install applications without knowing that the problem is mechanical. Before you bring the phone to the service, try cleaning the speaker yourself - it will take 10 to 30 minutes and save up to 1,500. ₽ diagnostically.
In this article, we will discuss 5 proven cleaning methods – from the most gentle (scotch, toothpicking) to deep cleaning with partial disassembly of the body. Also, you will learn what errors lead to irreversible damage to the speaker membrane and how to avoid them. Importantly, the methods are suitable only for the Redmi Note 5 Pro (codenamed whyred) – other Xiaomi models may have different speaker design!
Method 1: Dry cleaning with tape or tape
The safest and fastest method that is suitable for removing surface dust and fine villi is the usual stationery tape 18-24 mm wide or special sticky tape for cleaning keyboards (sold in computer stores), the advantage of the method is that it does not require disassembly and the risk of damaging the speaker membrane.
How to clean:
- 📏 Cut a strip of tape 5-7 cm long. fold it sticky side outwards to get a "loop».
- 🔍 Carefully apply the loop to the speaker grille and slightly press (don't press!).
- 🧹 Take off the tape with a sharp movement – dust and debris will remain on the sticky surface.
- 🔄 Repeat 3-4 times using a new piece of scotch each time.
This is effective if the contamination is shallow. To test the result, play a track with clear bass (for example, a 50 Hz test signal on YouTube). If the wheezing remains, move on to the next method.
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Use matte-colored Scotch – it is less aggressive to plastic than clear and leaves no trace of glue.
Method 2: Brushing with a toothpick or soft brush
If the tape didn't work, it means the trash got stuck deeper in the gaps between the grille and the speaker body, and this will help with a wooden toothpick (not metal!) or a soft brush with a soft pile (for example, for makeup or cleaning the lenses of cameras).
Step-by-step:
- 🪥 Take a toothpick and gently scroll it through the lattice holes of the speaker clockwise. Don't poke in, just the rotational motions!
- 🖌️ For brush: brush the dust away from the center of the speaker to the edges, as if "wiping out" the garbage out.
- 💡 Illuminate with a flashlight to see if there is any dirt left. Repeat the procedure if necessary.
After cleaning, blow the speaker with dry air (you can use a can of compressed air to clean the equipment, keeping it at a distance of 10-15 cm). Do not blow with your mouth - moisture from breathing can settle on the membrane and aggravate the problem.
Do not use metal objects (needles, pins)
Don't push the speaker membrane.
Do not use liquids (alcohol or water)
Do not clean the speaker on (vibration can damage the membrane)-->
Method 3: Deep cleaning with partial disassembly (for experienced)
If the speaker on the Redmi Note 5 Pro is not only wheezing, but has stopped playing sound at all, it is likely that the debris fell under the membrane or into the sound channel, in which case you will need to remove the back cover of the phone.
What you need:
- 🔧 Set of screwdrivers (cross-haul) PH00 flat 1.5 mm).
- 🧲 Plastic blade for disassembling smartphones (or mediator).
- 🔋 Screen removal sucker (optional if the lid sits tightly).
- 🧴 Isopropyl alcohol (90%+) and cotton-stick.
Instructions:
- Turn off the phone and remove it. SIM-scatter-card.
- Heat the back cover with a hairdryer (temperature not higher than 60 ° C) for 1-2 minutes - this will soften the glue.
- Carefully tuck the cover with a plastic spatula, starting at the bottom corner (near the speaker).
- Disconnect the battery plume (it is fixed on the latch).
- Once you reach the speaker, clean it with a dry cotton swab soaked in isopropyl alcohol.
- Collect the phone in reverse order, making sure all plumes are tightly connected.
What if the speaker did not work after disassembly?
Method 4: Purging with compressed air (to remove deep dust)
This is a good method if you have garbage inside the sound channel, but you don't want to disassemble the phone, you'll need a can of compressed air (sold in electronics stores, worth it). ~300 ₽). Important: Do not use a home vacuum cleaner - it creates too strong traction and can damage the membrane!
How to blow the speaker correctly:
- 🎯 Hold the spray vertically (do not tilt, otherwise the liquid will leak out!).
- 📏 Place the nozzle at a distance of 10-15 cm from the speaker grille.
- 💨 With short presses (1-2 seconds) blow the speaker at an angle of 45°. Do not direct the jet perpendicular to the membrane!
- 🔄 Repeat 3-4 times, then check the sound.
After purging, you can further clean the scotch bar (method 1) to remove the dust, and if the wheezing is left, then the pollution is too serious, and you can't do without disassembling.
Dry cleaning with scotch | Toothpick or brush |Purging with air |Purging of the phone |Never cleaned-->
Method 5: Ultrasound cleaning (extreme method)
This is a method that is used in service centers to restore speakers after a liquid or severe contamination, and it is not recommended at home, because it requires special equipment, an ultrasound bath, but if you decide, here's what you need to know:
Reasons to use ultrasound:
- 💦 The speaker "bubbles" after water hits (even if the phone did not sink, moisture could penetrate through the grille).
- 🔊 The sound is completely gone, but the membrane is intact (checked with a flashlight - if it reflects light, then it is not torn).
- 🧹 Previous cleaning methods have not helped.
How the process works:
- The speaker is removed from the phone (complete disassembly is required).
- Placed in an ultrasonic bath with distilled water or isopropyl alcohol.
- It is processed at a frequency of 40-60 kHz for 1-2 minutes.
- Dry for 24 hours at room temperature (do not use a hair dryer!).
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Ultrasonic cleaning removes up to 95% of the contaminants, but does not guarantee sound recovery if the membrane is deformed or torn.In 30% of cases, after such a procedure, the speaker still needs to be replaced.
What not to do when cleaning the speaker (5 critical errors)
Even the safest cleaning methods can be harmful if you break the rules. TOP-5 Errors that cause speaker failure on Redmi Note 5 Pro:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Using wet wipes or water | Short circuit, corrosion of contacts, "bubbling" of sound | Clean only with dry materials or isopropyl alcohol (quickly evaporates) |
| Strong pressure on the membrane | Membrane rupture, sound distortion, total loss of bass | Move only on the edges of the grid without touching the center |
| Cleaning the phone on | Vibration from sound can damage the membrane when mechanically exposed | Always turn off your phone before cleaning. |
| Use of sharp objects (needle, knife) | Scratches on the membrane, punctures, irreversible damage | Use only wooden toothpicks or soft brushes |
| Blowing with the mouth | The ingestion of saliva, moisture, bacteria - leads to the oxidation of contacts | Use only compressed air in cans |
If you've already made one of these mistakes, don't panic. In 70% of cases, the speaker can be restored at the service center (repair costs range from 800 to 2,000). ₽ But it is better to prevent the problem: regularly clean the speaker grille with tape (every 2-3 months) and avoid moisture.
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After cleaning the speaker, check it with a frequency test. Play sine wave videos on YouTube (20 Hz – 20 kHz) and make sure that all frequencies play without distortion.