{"id":2059,"date":"2018-10-03T00:00:00","date_gmt":"2018-10-03T00:00:00","guid":{"rendered":"http:\/\/192.168.2.19:8666\/?p=1"},"modified":"2024-09-19T10:59:35","modified_gmt":"2024-09-19T02:59:35","slug":"iphone-x-ringtone-not-working-pseudo-soldering","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/iphone-x-ringtone-not-working-pseudo-soldering\/","title":{"rendered":"Troubleshooting iPhone X Ringtone Issues Due to Pseudo Soldering"},"content":{"rendered":"

Pseudo-soldering components may result in multiple problems on an iPhone. This soldering issue of chips may be related to several reasons:<\/p>\n

1. Manufacturing defect when leaving the factory;<\/p>\n

2. Misoperation when running a logic board repair;<\/p>\n

3. Bad habits of its users etc.<\/p>\n

This time we will share you with an iPhone X no ringtone sound repair case caused by pseudo soldering of the motherboard after being dropped.<\/p>\n

The phone features a broken screen and a deformed housing.<\/p>\n

\"La<\/p>\n

Get a new display assembly installed and test.<\/p>\n

Le t\u00e9l\u00e9phone s'allume normalement.<\/p>\n

After a series of tests, we found out that there is no output sound when selecting a ringtone.<\/p>\n

Yet the sound works fine with a headphone plugged in.<\/p>\n

\"La<\/p>\n

The preliminary judgment is that the audio circuit is in normal condition.<\/p>\n

It\u2019s just that the bottom speaker is not working.<\/p>\n

Remove the display assembly and disconnect the battery.<\/p>\n

Disconnect the charging port flex cable.<\/p>\n

\"La<\/p>\n

Run diode mode measurement of the DOCK connector.<\/p>\n

La valeur mesur\u00e9e est normale.<\/p>\n

Which indicates that the bottom speaker is in normal condition.<\/p>\n

\"La<\/p>\n

Run diode mode measurement<\/p>\n

Continue to measure the connector on the motherboard.<\/p>\n

The relevant circuit of one Pin has been open-circuited.<\/p>\n

\"La<\/p>\n

measure the connector on the motherboard<\/p>\n

Remove the upper layer with a Hot Air Gun.<\/p>\n

There are multiple missing pins on the upper layer.<\/p>\n

\"La<\/p>\n

Judging by this, the phone has been dropped.<\/p>\n

Which resulted in pseudo soldering of the motherboard and detachment of pins.<\/p>\n

Remove tins on cylinders and bonding pads of the upper layer.<\/p>\n

Nettoyer ensuite avec le PCB Cleaner.<\/p>\n

\"La<\/p>\n

Remove tins on cylinders and bonding pads<\/p>\n

Run diode mode measurement of Pin S162 and Pin S163.<\/p>\n

La valeur mesur\u00e9e est normale.<\/p>\n

\"La<\/p>\n

Judging by this, the open-circuited condition is caused by the pseudo soldering of cylinders around the edge of the lower layer.<\/p>\n

Get the motherboard installed to the testing kit and test.<\/p>\n

The current reading on the ammeter is normal.<\/p>\n

Go to Settings>Sounds&Haptics>Ringtone.<\/p>\n

Select a default ringtone.<\/p>\n

Normal output sound this time.<\/p>\n

\"La<\/p>\n

We can confirm now that the fault is caused by the pseudo soldering of cylinders around the edge of the lower layer.<\/p>\n

Now we can solder the two layers together.<\/p>\n

Before soldering, treat Pin S166 with jumper wiring.<\/p>\n

\"La<\/p>\n

Next, let\u2019s get the lower layer rebelled.<\/p>\n

And re-solder the motherboard.<\/p>\n

\"La<\/p>\n

Assemble the phone and test. Go to Settings>Sounds&Haptics>Ringtone.<\/p>\n

Select a default ringtone, normal output sound this time. Fault cleared.<\/p>\n

Attaching the video for more details about the\u00a0iPhone X Bottom Speaker Not Working Repair – Pseudo Soldering<\/p>\n

Outils utilis\u00e9s :<\/strong><\/p>\n