iaomi Blackshark 4 Pro Audio Ringer Problem Solution | Step by Step Repair Guide US UK Europe скачать в хорошем качестве

iaomi Blackshark 4 Pro Audio Ringer Problem Solution | Step by Step Repair Guide US UK Europe

In this complete hardware repair video, learn how to fix Xiaomi Blackshark 4 Pro Audio Ringer Not Working problem. This step-by-step guide covers testing of speaker, ringer IC, audio filters, and board connections. Perfect for professional and beginner mobile technicians across US, UK, and Europe, this tutorial explains how to trace audio output lines, jumper points, and replace faulty ICs. Follow this How To Repair Step by Step Repair Guide to restore clear sound output. 🪛 30 Step-by-Step Repair Guide: Power off the Xiaomi Blackshark 4 Pro. Remove the SIM tray and back panel carefully. Disconnect the battery before continuing. Open the lower sub-board section where ringer is located. Inspect speaker (ringer) connector visually. Clean connector pins with a soft brush and isopropyl alcohol. Use a multimeter to check continuity between speaker and board. If open, replace the ringer flex or repair jumper line. Measure voltage at the speaker positive terminal while playing sound. If no voltage, trace to the Audio IC output pin. Check for damaged capacitors or filters near Audio IC. Replace any burnt or shorted components. Check ground continuity at speaker terminals. Measure resistance across ringer lines for open or short. If resistance is abnormal, replace audio filter IC. Test the sub-board FPC connection to main board. Clean FPC terminals with cleaner spray. Reconnect and secure the sub-board connector. Play audio again to test speaker output. If no sound, reflow the Audio IC with a hot air gun (350°C). Test again after reflowing. If still no output, replace the Audio IC. Check the PMIC output for 1.8V/2.8V supply to Audio IC. Ensure supply voltage continuity. Replace missing or open capacitors in the ringer line. Test vibration and sound to ensure both are active. Confirm clear sound from speaker output. Reassemble the phone after successful repair. Final test using ringtone and media playback. Complete hardware check and clean all sections. 🔖 Hashtags: #XiaomiBlackshark4Pro #Blackshark4ProAudioFix #AudioRingerProblem #SoundRepair #RingerICSolution #XiaomiRepair #MobileHardwareRepair #StepByStepRepairGuide #SmartphoneAudioFix #US #UK #Europe #HardwareJumperWays #MobileRepair #AudioCircuitSolution #HowToFixRinger #ElectronicsRepair #MobileTechnician #PMICRepair #AudioICFix #SpeakerProblem