{"id":13119,"date":"2022-06-02T21:20:00","date_gmt":"2022-06-02T13:20:00","guid":{"rendered":"https:\/\/rewa.tech\/iphone-12-cannot-boot\/"},"modified":"2025-07-11T15:44:55","modified_gmt":"2025-07-11T07:44:55","slug":"iphone-12-no-arranca-despues-de-la-caida","status":"publish","type":"post","link":"https:\/\/rewa.tech\/es\/iphone-12-wont-boot-after-drop\/","title":{"rendered":"\u00bfEl iPhone 12 no arranca despu\u00e9s de una ca\u00edda? C\u00f3mo arreglar los da\u00f1os en la placa l\u00f3gica paso a paso"},"content":{"rendered":"<p>Cuando un iPhone 12 sufre una ca\u00edda fuerte, no solo la pantalla o el cristal trasero se resienten, los componentes internos de la placa l\u00f3gica tambi\u00e9n pueden sufrir da\u00f1os graves. Si tu iPhone 12 no arranca y solo muestra una corriente fija de unos 70 mA en una fuente de alimentaci\u00f3n de CC, esta gu\u00eda detalla un caso real de reparaci\u00f3n a nivel de placa. Cubriremos c\u00f3mo identificar da\u00f1os en la NAND o la CPU, realizar intercambios de chips cifrados y restaurar el tel\u00e9fono para que funcione, perfecto para t\u00e9cnicos de reparaci\u00f3n avanzados, restauradores y propietarios de talleres de reparaci\u00f3n.<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element has-white-color has-electric-grass-gradient-background has-text-color has-background has-link-color wp-elements-275685d352bab8c108a561b68b1d3efa\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"866\" height=\"1024\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12-866x1024.png\" alt=\"iphone 12\" class=\"wp-image-14711 size-full\" style=\"object-position:50% 25%\" title=\"\" srcset=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12-866x1024.png 866w, https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12-254x300.png 254w, https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12-768x909.png 768w, https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12.png 940w\" sizes=\"(max-width: 866px) 100vw, 866px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\">Descripci\u00f3n general del dispositivo<\/h3>\n\n\n\n<p><strong>Modelo:<\/strong> iPhone 12<\/p>\n\n\n\n<p><strong>Fecha de publicaci\u00f3n:<\/strong> Octubre de 2020<\/p>\n\n\n\n<p><strong>Asunto:<\/strong> Da\u00f1os f\u00edsicos graves, pantalla\/dorso agrietados, no puede arrancar<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Diagn\u00f3stico inicial: El tel\u00e9fono no arranca<\/h2>\n\n\n\n<p>Tras desmontar el iPhone 12, se prob\u00f3 la placa base utilizando una fuente de alimentaci\u00f3n de corriente continua. La corriente de arranque se mantuvo fija en <strong>~70mA<\/strong>un indicador com\u00fan de fallo de la NAND o de la CPU.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/diassemble_the_phone_and_take_out_the_motherboard.png\" alt=\"iphone 12 disemble\" title=\"\"><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/01__connect_the_motherboard_with_the_DC_power_supply__trigger_to_boot.png\" alt=\"iphone 12 placa base\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Inspecci\u00f3n interna del Consejo<\/h2>\n\n\n\n<p>La placa base se separ\u00f3 en capas superior e inferior utilizando una plataforma calefactora. Tras la inspecci\u00f3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Faltaban algunas almohadillas.<\/li>\n\n\n\n<li>En <strong>El chip NAND ten\u00eda una peque\u00f1a grieta<\/strong> en el borde.<\/li>\n\n\n\n<li>El resto del tablero parec\u00eda intacto.<\/li>\n<\/ul>\n\n\n\n<p>En circunstancias normales, la eliminaci\u00f3n de la NAND sigue permitiendo que el tel\u00e9fono se conecte a iTunes o 3uTools, pero en este caso no fue as\u00ed. Esto hizo sospechar de da\u00f1os en la CPU.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/Heat_and_separate_the_motherboard.png\" alt=\"iphone 12 placa base\" title=\"\"><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/02__When_checking_the_NAND_chip_under_the_microscope_we_can_see_there_is_a_little_crack_at_the_edge.png\" alt=\"iphone 12 nand\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Extracci\u00f3n de NAND y CPU<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Retire con cuidado el pegamento negro alrededor de la NAND con un cuchillo de esculpir y una pistola de calor.<\/li>\n\n\n\n<li>Calent\u00e9 el chip hasta que se derriti\u00f3 la soldadura y lo despegu\u00e9.<\/li>\n\n\n\n<li>Junta bajo NAND fue <strong>fuertemente deformado (en forma de balanc\u00edn).<\/strong><\/li>\n\n\n\n<li>A continuaci\u00f3n, se retir\u00f3 la CPU y se inspeccion\u00f3 - <strong>sin grietas visibles o falta de almohadillas.<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/03__Heat_the_whole_NAND_on_the_surface_evenly__when_tins_get_melt_insert_the_blade_knife_to_pry_it_up.png\" alt=\"reparaci\u00f3n iphone 12\" title=\"\"><\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/04__After_remove_the_NAND_we_can_see_the_board_get_deformed_seriously.png\" alt=\"iphone 12 placa base\" title=\"\"><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/CPU_looks_fine.png\" alt=\"iphone 12 placa base\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Proceso de reparaci\u00f3n por intercambio de chips<\/h2>\n\n\n\n<p>Dada la deformaci\u00f3n f\u00edsica, el arreglo probable implicaba <strong>trasplante de chips cifrados con llave<\/strong> a una nueva junta.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Cambi\u00e9 lo siguiente de la placa da\u00f1ada a la placa donante:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Chip NAND<\/li>\n\n\n\n<li>CPU<\/li>\n\n\n\n<li>EEPROM l\u00f3gica<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Conectada la placa l\u00f3gica superior a la corriente continua, \u00a1el tel\u00e9fono arranc\u00f3 correctamente!<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/05__Swap_the_NAND__CPU_and_logic_EEPROM_one_by_one.png\" alt=\"iphone 12 a14 chip\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Intercambio de chips de la tarjeta de se\u00f1ales<\/h2>\n\n\n\n<p>Para restablecer las funciones de red y conectividad:<\/p>\n\n\n\n<p>La CPU de banda base y el chip Wi-Fi tambi\u00e9n se transfirieron a la placa de se\u00f1alizaci\u00f3n del donante.<\/p>\n\n\n\n<p>Con las dos capas de la placa conectadas temporalmente para la prueba, el tel\u00e9fono volvi\u00f3 a arrancar correctamente.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/06__Swap_the_WIFI_and_Baseband_CPU.png\" alt=\"reparaci\u00f3n iphone 12\" title=\"\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Montaje final<\/h3>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Las capas superior e inferior se volvieron a unir de forma permanente.<\/li>\n\n\n\n<li>El tel\u00e9fono estaba completamente montado.<\/li>\n\n\n\n<li>Todas las funciones pasadas - <strong>\u00a1iPhone 12 totalmente restaurado!<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_12_Cannot_Boot.png\" alt=\"El iPhone 12 no arranca\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Lista de herramientas y piezas<\/h2>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center has-cyan-bluish-gray-background-color has-background is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<p><strong>Herramientas:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fuente de alimentaci\u00f3n de CC<\/li>\n\n\n\n<li>Plataforma de calefacci\u00f3n<\/li>\n\n\n\n<li>Microscopio<\/li>\n\n\n\n<li>Pistola de aire caliente<\/li>\n\n\n\n<li>Cuchillo para escultura<\/li>\n\n\n\n<li>Cuchillo de hoja<\/li>\n\n\n\n<li>Banco de pruebas de placas base por capas<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<p><strong>Piezas:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Donante iPhone 12 placa l\u00f3gica<\/li>\n\n\n\n<li>Placa de se\u00f1alizaci\u00f3n de repuesto<\/li>\n\n\n\n<li>EEPROM l\u00f3gica<\/li>\n\n\n\n<li>Chip NAND<\/li>\n\n\n\n<li>CPU<\/li>\n\n\n\n<li>Chip Wi-Fi<\/li>\n\n\n\n<li>CPU de banda base<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusi\u00f3n:<\/h2>\n\n\n\n<p>Grave <a href=\"https:\/\/rewa.tech\/es\/iphone-12-pro-drop-damage-cannot-boot-issue-repair\/\" data-type=\"post\" data-id=\"13109\">da\u00f1os por ca\u00edda<\/a> no siempre significa que tu iPhone 12 no se pueda reparar. Si no arranca y muestra una corriente de 70 mA, es probable que haya una placa deformada o un fallo en la NAND\/CPU. Con una inspecci\u00f3n cuidadosa, trasplantes de chips encriptados y el uso de placas de donantes, un t\u00e9cnico experto puede revivir un tel\u00e9fono aparentemente muerto.<\/p>\n\n\n\n<p>\u00bfTienes preguntas? Deja un comentario o comparte tu historia de reparaci\u00f3n del iPhone 12 m\u00e1s dif\u00edcil a continuaci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"<p>When an iPhone 12 experiences a severe drop, it&#8217;s not just the screen or back glass that suffers\u2014internal logic board components can also sustain serious damage. If your iPhone 12 won\u2019t boot and only shows a fixed current of around 70mA on a DC power supply, this guide details a real-world board-level repair case. We\u2019ll [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":13120,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[16,1485,13,158,447],"tags":[21,61,153],"class_list":["post-13119","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-case-study","category-how-to","category-iphone-guide","category-troubleshooting","tag-iphone","tag-iphone-12","tag-phone-repair"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/posts\/13119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/comments?post=13119"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/posts\/13119\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/media\/13120"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/media?parent=13119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/categories?post=13119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/es\/wp-json\/wp\/v2\/tags?post=13119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}