{"id":6558,"date":"2025-07-04T14:24:41","date_gmt":"2025-07-04T14:24:41","guid":{"rendered":"https:\/\/portatilinformatica.com.br\/?p=6558"},"modified":"2025-09-16T19:06:05","modified_gmt":"2025-09-16T19:06:05","slug":"macbook-a1708-usbc-pwm-backlight-reparo-bh","status":"publish","type":"post","link":"https:\/\/demo03wesoftwaredesign.com.br\/?p=6558","title":{"rendered":"MacBook Pro A1708 820\u201100840\u2011A com USB\u2011C Queimado ou Tela Preta? Reparo Profissional em BH"},"content":{"rendered":"<h1 style=\"text-align: center;\" data-start=\"348\" data-end=\"404\">MacBook Pro A1708 820\u201100840\u2011A com USB\u2011C Queimado ou Tela Preta?<\/h1>\n<h3 data-start=\"348\" data-end=\"404\"><\/h3>\n<h3 data-start=\"348\" data-end=\"404\"><strong data-start=\"355\" data-end=\"404\">1. Portas USB\u2011C queimadas ou curtas el\u00e9tricas<\/strong><\/h3>\n<ul data-start=\"405\" data-end=\"646\">\n<li data-start=\"405\" data-end=\"484\">\n<p data-start=\"407\" data-end=\"484\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Muitos relatos de curto nos portos USB\u2011C, medindo 2\u20113\u202f\u03a9 entre o rail PP20V_USBC_XA_VBUS e terra<\/span><\/p>\n<\/li>\n<li data-start=\"485\" data-end=\"564\">\n<p data-start=\"487\" data-end=\"564\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">O conector USB\u2011C \u00e9 soldado diretamente na placa, exigindo rework especializado com ChipQuik e substitui\u00e7\u00e3o por porta de doador<\/span><\/p>\n<\/li>\n<li data-start=\"565\" data-end=\"646\">\n<p data-start=\"567\" data-end=\"646\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Sintomas: o Mac n\u00e3o carrega, n\u00e3o reconhece dispositivos e pode iniciar, mas falhar rapidamente<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"648\" data-end=\"684\"><strong data-start=\"648\" data-end=\"684\">Solu\u00e7\u00e3o da Port\u00e1til Inform\u00e1tica:<\/strong><\/p>\n<ul data-start=\"685\" data-end=\"810\">\n<li data-start=\"685\" data-end=\"726\">\n<p data-start=\"687\" data-end=\"726\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Diagn\u00f3stico com medi\u00e7\u00e3o e remo\u00e7\u00e3o dos fus\u00edveis F3000\/F3010;<\/span><\/p>\n<\/li>\n<li data-start=\"727\" data-end=\"768\">\n<p data-start=\"729\" data-end=\"768\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Substitui\u00e7\u00e3o da porta USB\u2011C com esta\u00e7\u00e3o BGA e solda de baixa temperatura;<\/span><\/p>\n<\/li>\n<li data-start=\"769\" data-end=\"810\">\n<p data-start=\"771\" data-end=\"810\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Troca dos diodos (D3300\/D3400) e limpeza de trilhas.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"817\" data-end=\"879\"><strong data-start=\"824\" data-end=\"879\">2. PWM de brilho e circuitos de backlight com curto<\/strong><\/h3>\n<ul data-start=\"880\" data-end=\"1045\">\n<li data-start=\"880\" data-end=\"963\">\n<p data-start=\"882\" data-end=\"963\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Problemas no PWM do backlight podem causar falha total de imagem e consumo m\u00ednimo (~300\u202fmA) mesmo com LED aceso<\/span><\/p>\n<\/li>\n<li data-start=\"964\" data-end=\"1045\">\n<p data-start=\"966\" data-end=\"1045\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">One usu\u00e1rio relatou sem imagem, 0\u202fV no backlight e consumo est\u00e1tico de 0,30\u202fmA<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1047\" data-end=\"1059\"><strong data-start=\"1047\" data-end=\"1059\">Solu\u00e7\u00e3o:<\/strong><\/p>\n<ul data-start=\"1060\" data-end=\"1185\">\n<li data-start=\"1060\" data-end=\"1101\">\n<p data-start=\"1062\" data-end=\"1101\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Inspe\u00e7\u00e3o da tens\u00e3o PPVOUT e EDP_BKLT_EN;<\/span><\/p>\n<\/li>\n<li data-start=\"1102\" data-end=\"1143\">\n<p data-start=\"1104\" data-end=\"1143\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Reparo ou substitui\u00e7\u00e3o do controlador PWM IC;<\/span><\/p>\n<\/li>\n<li data-start=\"1144\" data-end=\"1185\">\n<p data-start=\"1146\" data-end=\"1185\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Refluxo e microsoldagem de componentes atrelados ao circuito de luminosidade.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1192\" data-end=\"1274\"><strong data-start=\"1199\" data-end=\"1274\">3. Controladores de tens\u00e3o e carga (ISL9239, CD3215\/CD3217) defeituosos<\/strong><\/h3>\n<ul data-start=\"1275\" data-end=\"1440\">\n<li data-start=\"1275\" data-end=\"1358\">\n<p data-start=\"1277\" data-end=\"1358\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Falha em controladores de convers\u00e3o para 20\u202fV causa n\u00e3o carregamento ou carga limitada (5\u202fV apenas)<\/span><\/p>\n<\/li>\n<li data-start=\"1359\" data-end=\"1440\">\n<p data-start=\"1361\" data-end=\"1440\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Identificamos uso de C6465 e tens\u00e3o DC insuficiente (PPDCIN ~5\u202fV)<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1442\" data-end=\"1454\"><strong data-start=\"1442\" data-end=\"1454\">Solu\u00e7\u00e3o:<\/strong><\/p>\n<ul data-start=\"1455\" data-end=\"1538\">\n<li data-start=\"1455\" data-end=\"1496\">\n<p data-start=\"1457\" data-end=\"1496\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Diagn\u00f3stico com inje\u00e7\u00e3o de tens\u00e3o, an\u00e1lise de curto e substitui\u00e7\u00e3o do ISL9239 ou chip CD3215;<\/span><\/p>\n<\/li>\n<li data-start=\"1497\" data-end=\"1538\">\n<p data-start=\"1499\" data-end=\"1538\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Reparo da malha de alimenta\u00e7\u00e3o e testes com carregador original.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1545\" data-end=\"1606\"><strong data-start=\"1552\" data-end=\"1606\">4. Queda de consumo (0,30\u202fmA) mesmo com LED ligado<\/strong><\/h3>\n<ul data-start=\"1607\" data-end=\"1688\">\n<li data-start=\"1607\" data-end=\"1688\">\n<p data-start=\"1609\" data-end=\"1688\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Indica curto em rail principal ou CPU inativo, comum em falhas iniciais ap\u00f3s carga incompleta<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1690\" data-end=\"1702\"><strong data-start=\"1690\" data-end=\"1702\">Solu\u00e7\u00e3o:<\/strong><\/p>\n<ul data-start=\"1703\" data-end=\"1842\">\n<li data-start=\"1703\" data-end=\"1784\">\n<p data-start=\"1705\" data-end=\"1784\"><span class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\">Verificar consumo no boot (~680 mA com bateria removida)<\/span><\/p>\n<\/li>\n<li data-start=\"1785\" data-end=\"1842\">\n<p data-start=\"1787\" data-end=\"1842\">Restaurar tens\u00f5es PPBUS_G3H e PP20V via rework correto.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1849\" data-end=\"1883\">\u26a0\ufe0f <strong data-start=\"1856\" data-end=\"1883\">Evite consertar em casa<\/strong><\/h3>\n<p data-start=\"1884\" data-end=\"1917\">Desmontar sem equipamentos causa:<\/p>\n<ul data-start=\"1918\" data-end=\"2027\">\n<li data-start=\"1918\" data-end=\"1959\">\n<p data-start=\"1920\" data-end=\"1959\">Rompimento de fus\u00edveis e trilhas finas;<\/p>\n<\/li>\n<li data-start=\"1960\" data-end=\"1984\">\n<p data-start=\"1962\" data-end=\"1984\">Danos na solda de CPU;<\/p>\n<\/li>\n<li data-start=\"1985\" data-end=\"2027\">\n<p data-start=\"1987\" data-end=\"2027\">Falhas permanentes nos controladores IC.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"2034\" data-end=\"2085\">\ufe0f <strong data-start=\"2041\" data-end=\"2085\">Por que escolher a Port\u00e1til Inform\u00e1tica?<\/strong><\/h2>\n<ul data-start=\"2086\" data-end=\"2580\">\n<li data-start=\"2086\" data-end=\"2137\">\n<p data-start=\"2088\" data-end=\"2137\">Especialistas em rework BGA e solda microsc\u00f3pica;<\/p>\n<\/li>\n<li data-start=\"2138\" data-end=\"2197\">\n<p data-start=\"2140\" data-end=\"2197\">Diagn\u00f3stico avan\u00e7ado de tens\u00f5es PWM, USB\u2011C e alimenta\u00e7\u00e3o;<\/p>\n<\/li>\n<li data-start=\"2198\" data-end=\"2266\">\n<p data-start=\"2200\" data-end=\"2266\">Uso de solda especializada (ChipQuik) e esta\u00e7\u00f5es de alta precis\u00e3o;<\/p>\n<\/li>\n<li data-start=\"2267\" data-end=\"2319\">\n<p data-start=\"2269\" data-end=\"2319\">Testes com inje\u00e7\u00e3o de carga e consumo;<\/p>\n<\/li>\n<li data-start=\"2320\" data-end=\"2376\">\n<p data-start=\"2322\" data-end=\"2376\">Instala\u00e7\u00e3o de firmware\/software com reset de SMC\/PRAM;<\/p>\n<\/li>\n<li data-start=\"2377\" data-end=\"2456\">\n<p data-start=\"2379\" data-end=\"2456\">Atendimento em BH (Santa Am\u00e9lia, Santa M\u00f4nica, Jaragu\u00e1, Liberdade, Pampulha);<\/p>\n<\/li>\n<li data-start=\"2457\" data-end=\"2580\">\n<p data-start=\"2459\" data-end=\"2580\">Atendimento via WhatsApp <strong data-start=\"2484\" data-end=\"2501\">xx31995787120<\/strong> e Instagram <a class=\"\" href=\"https:\/\/instagram.com\/portatilinformatica\" target=\"_new\" rel=\"noopener\" data-start=\"2514\" data-end=\"2579\">@portatilinformatica<\/a>.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>MacBook Pro A1708 820\u201100840\u2011A com USB\u2011C Queimado ou Tela Preta? 1. Portas USB\u2011C queimadas ou curtas el\u00e9tricas Muitos relatos de curto nos portos USB\u2011C, medindo 2\u20113\u202f\u03a9 entre o rail PP20V_USBC_XA_VBUS e terra O conector USB\u2011C \u00e9 soldado diretamente na placa, exigindo rework especializado com ChipQuik e substitui\u00e7\u00e3o por porta de doador Sintomas: o Mac n\u00e3o&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,1,32,33,35,36],"tags":[],"class_list":["post-6558","post","type-post","status-publish","format-standard","hentry","category-area-de-atuacao","category-artigos","category-blog","category-dicas","category-macos","category-tecnologia"],"_links":{"self":[{"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/posts\/6558","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6558"}],"version-history":[{"count":2,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/posts\/6558\/revisions"}],"predecessor-version":[{"id":22433,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=\/wp\/v2\/posts\/6558\/revisions\/22433"}],"wp:attachment":[{"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo03wesoftwaredesign.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}