{"id":12884,"date":"2021-06-21T04:56:00","date_gmt":"2021-06-20T20:56:00","guid":{"rendered":"https:\/\/rewa.tech\/iphone-8-plus-wont-turn-on-repair\/"},"modified":"2024-05-10T15:25:18","modified_gmt":"2024-05-10T07:25:18","slug":"iphone-8-plus-wont-turn-on-repair","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/iphone-8-plus-wont-turn-on-repair\/","title":{"rendered":"iPhone 8 Plus Won\u2019t Turn On Repair"},"content":{"rendered":"<p class=\"MsoNormal\" align=\"justify\" style=\"text-align: justify; text-justify: inter-ideograph;\"><b><span style=\"font-family: Calibri; font-size: 15pt;\">Ph\u00e9nom\u00e8ne de dysfonctionnement<\/span><\/b><b><span style=\"font-family: Calibri; font-size: 15pt;\"><\/p>\n<p><\/span><\/b><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Le t\u00e9l\u00e9phone a gagn\u00e9<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">'<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">t be turned on.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">When connecting the battery connector with the DC power supply, the current jumps to 250MA and then back to 0MA.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"justify\" style=\"text-align: justify; text-justify: inter-ideograph;\"><b><span style=\"font-family: Calibri; font-size: 15pt;\">D\u00e9pannage<\/span><\/b><b><span style=\"font-family: Calibri; font-size: 15pt;\"><\/p>\n<p><\/span><\/b><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\">Pour les&nbsp;<\/span><span style=\"font-family: Calibri;\"><span style=\"font-size: 16px;\">iPhone 8 Plus Won&rsquo;t Turn On Repair issue.<\/span><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"font-family: Calibri; font-size: 12pt; text-align: justify; text-indent: 24pt;\">According to the experience of repair, the fault might be related to the USB or charger-relevant circuit.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\">Take apart the phone and run the cosmetic inspection of the motherboard first. then remove USB IC U6300 and measured bonding pads, the measured value is normal. <\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\">From the circuit diagram, charging IC U3300 can get power from DOCK connector J6400 directly. Then we measure the voltage of C3301, which is normal.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iphone-8-plus-wont-turn-on-repair-vliju.png\" alt=\"\" title=\"\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iphone-8-plus-wont-turn-on-repair-1b5zd.png\" alt=\"\" width=\"458\" height=\"423\" title=\"\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"font-family: Calibri; font-size: 16px; text-align: justify; text-indent: 32px;\">The voltage value is abnormal, then we remove the U3300 and measured the diode value of the bonding pad, which is normal.<\/span><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iphone-8-plus-wont-turn-on-repair-xidgw.png\" alt=\"\" width=\"580\" height=\"263\" title=\"\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\"><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\">So we can get the conclusion that the fault is related to the U3300 because there is no<\/span><span style=\"text-align: justify; text-indent: 24pt; font-family: Calibri; font-size: 12pt;\">&nbsp;voltage outputted from U3300. Finally, we replace the U3300 with a new one.<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">&nbsp;<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 10.5000pt; mso-font-kerning: 1.0000pt;\"><\/p>\n<p><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-autospace: ideograph-numeric; mso-pagination: none; line-height: 20.0000pt; mso-line-height-rule: exactly;\">\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">After replacing it with a new one, get the motherboard mounted and test again,<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">charge <\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">function is back to normal. Problem resolved.<\/span><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\"><\/span><\/p>\n<p class=\"MsoNormal\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iphone-8-plus-wonrsquot-turn-on-repair-b0yxc.png\" alt=\"iPhone 8 Plus Won&rsquo;t Turn On Repair\" width=\"200\" height=\"251\" title=\"\"><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\"><\/span><\/p>\n<p class=\"MsoNormal\">\n<p class=\"MsoNormal\"><a><\/a><a href=\"https:\/\/academy.rewa.tech\/courses\/iphone-x-logic-board-repair-course\"><b><u><span class=\"15\" style=\"font-family: Calibri; color: #0000ff; letter-spacing: 0pt; font-size: 16pt; background: #bfe6ff;\">Cours de r\u00e9paration de la carte m\u00e8re de l'iPhone X<\/span><\/u><\/b><\/a><span style=\"mso-spacerun: 'yes'; font-family: Calibri; mso-fareast-font-family: \u5b8b\u4f53; mso-bidi-font-family: 'Times New Roman'; font-size: 10.5000pt; mso-font-kerning: 1.0000pt;\"><\/p>\n<p><\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Malfunction Phenomenon The phone won&rsquo;t be turned on. When connecting the battery connector with the DC power supply, the current jumps to 250MA and then back to 0MA. Troubleshooting For the&nbsp;iPhone 8 Plus Won&rsquo;t Turn On Repair issue. According to the experience of repair, the fault might be related to the USB or charger-relevant circuit. [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":12885,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[780],"tags":[],"class_list":["post-12884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iphone-repair-cases"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/12884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/comments?post=12884"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/12884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media\/12885"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media?parent=12884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/categories?post=12884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/tags?post=12884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}