How To Fix iPhone X Wont Turn On With Logic Board Repair

share
Video Introduction
32493 views

<p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">iPhone won&#39;t turn on and the screen is black or frozen? After software issue being excluded, the problem may be caused </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">by&nbsp;</span></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">a</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> faulty logic board. Since </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">logic</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> board of iPhone X is a single one that&#39;s basically been folded over and soldered together,&nbsp;</span></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">the unique design and structure have made any repairs to the logic board far more difficult than </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">previous</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> series. With our</span></p><p><a href="https://blog.rewatechnology.com/iphone-x-wont-turn-on/" target="_self" style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;; color: rgb(0, 176, 240); text-decoration: underline;"><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;; color: rgb(0, 176, 240);">&nbsp;iPhone X won&#39;t power on repair</span></a><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;; color: rgb(0, 176, 240);"> </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> case today, the fault has been confirmed as inductor damage by voltage measurement.&nbsp;</span></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">And we can fix the iPhone X won&#39;t turn on </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">issue</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> by inductor replacing and board re-soldering.&nbsp;</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">Just <strong>4 steps</strong> to fix your&nbsp;<strong>iPhone x won&#39;t turn on</strong>.</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">1. Disassemble</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">Disassemble the won’t turn on iPhone X. Take out the double layer motherboard. Here comes the first difficulty – separate the folded motherboard. which requires severely temperature controlling. Excessively high temperature would damage the components around, but too low temperature cannot separate them. With patience and time, we separate the logic board successfully.</span></p><p><br/></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">2. Diagnosis</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">After the logic board was separated, connect the upper layer with DC Power Supply. The reading current is abnormal. So we locate the fault to the upper layer. To continue our diagnosis, we measure power supply voltage of the upper layer with Multimeter. And find out there is no voltage value on C2771 and C2770. Measure with Multimeter and we can confirm that the inductor L2770 is damaged.</span></p><p><br/></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">3. Maintenance &amp; Test</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">So we need to take down inductor </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">L2770,</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> and replace with a new inductor. Firstly, attach the upper layer to the PCB Holder. And stick High-Temperature Adhesive Tape on components around L2770 for protection. Then re-solder with a new inductor. After cooling down, measure the current value again via connect it with DC Power Supply. The measured current value on the ammeter is normal this time. Fault cleared.</span></p><p><br/></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">4. Reassemble</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">Guess what? Here comes the most difficult part of the repair – to remove tins from the two layers separately. We transfer the direction for 5 times and finally finish the tin removing process. Then another difficult part – to </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">reball</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> the lower layer. We actually made it only at our second attempt. Eventually, we got re-solder the two boards and reassemble the phone, the iPhone X won’t turn on </span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">issue</span><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;"> was finally solved.</span></p><p><br/></p><p><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">If you want to see the detail steps with pictures please go to </span><a href="https://blog.rewatechnology.com/iphone-x-wont-turn-on/" target="_self" style="color: rgb(0, 176, 240); font-family: 微软雅黑, &quot;Microsoft YaHei&quot;; text-decoration: underline;"><span style="color: rgb(0, 176, 240); font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">REWA Blog</span></a><span style="font-family: 微软雅黑, &quot;Microsoft YaHei&quot;;">.&nbsp;We have released three iPhone devices won’t turn on solutions:</span></p><ul style="box-sizing: border-box; margin-bottom: 22px; padding: 0px 0px 0px 30px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: Roboto, Arial; vertical-align: baseline; -webkit-font-smoothing: antialiased; list-style-position: initial; list-style-image: initial; color: rgb(102, 102, 102); white-space: normal; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p><a href="https://blog.rewatechnology.com/fix-iphone-7-wont-power-on-cpu-repair/" target="_blank" rel="noopener" style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font: inherit; vertical-align: baseline; -webkit-font-smoothing: antialiased; text-decoration-line: none; cursor: pointer; color: rgb(26, 26, 26); display: inline-block; transition: all 200ms ease-out;"><span style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font: inherit; vertical-align: baseline; -webkit-font-smoothing: antialiased; display: inline-block; color: rgb(0, 0, 255);">iPhone 7 won’t turn on</span></a>,</p></li><li><p><a href="https://blog.rewatechnology.com/iphone-wont-turn-on-repair-pmic-grinding-replacing/" target="_blank" rel="noopener" style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font: inherit; vertical-align: baseline; -webkit-font-smoothing: antialiased; text-decoration-line: none; cursor: pointer; color: rgb(26, 26, 26); display: inline-block; transition: all 200ms ease-out;"><span style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font: inherit; vertical-align: baseline; -webkit-font-smoothing: antialiased; display: inline-block; color: rgb(0, 0, 255);">iPhone 6/6s won’t turn on</span></a>.</p></li></ul><p><br/></p>