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03-07-2020, 08:57 | #1 (permalink) |
Freak Poster Join Date: May 2018
Posts: 115
Member: 2833946 Status: Offline Thanks Meter: 108 | [Solved]iPhone X bottom speaker not working Step 1 Run diode mode measurement of the DOCK connector. The measured value is normal. Which indicates that the bottom speaker is in normal condition. Step 2 Continue to measure the motherboard connector. Judging by the measured value, relevant circuits of one Pin on the connector has open-circuited. Step 3 Remove the upper layer with Hot Air Gun. We can see that there are multiple missing pins on the upper layer. Step 4 Clean the third space PCB. Run diode mode measurement of Pin S162 and Pin S163. The measured value is normal. Step 5 Get the motherboard installed to the testing kit and test. Current reading on the ammeter is normal. Go to Settings>Sounds&Haptics>Ringtone. Select a default ringtone. Normal output sound this time. For video tutorial please go to REWA Official YouTube channel. |
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