{"id":4410,"date":"2016-04-28T20:56:00","date_gmt":"2016-04-28T18:56:00","guid":{"rendered":"https:\/\/www.stohn.de\/3d\/?p=4410"},"modified":"2016-04-28T20:56:00","modified_gmt":"2016-04-28T18:56:00","slug":"usb-repair-of-my-a1278-macbook-pro-13-2012","status":"publish","type":"post","link":"https:\/\/www.stohn.de\/3d\/index.php\/2016\/04\/28\/usb-repair-of-my-a1278-macbook-pro-13-2012\/","title":{"rendered":"USB repair of my A1278 (MacBook Pro 13 &#8211; 2012)"},"content":{"rendered":"<p>Since Apple decided not to manufacture a new usable MacBook Pro (Minimum: Core i7, 16GB RAM, 2 TB SSD) I have to continue to use my old MacBook Pro 13&#8243; from 2012 (Core i7, 16GB RAM, 2x 1TB SSD).<\/p>\n<p>Unfortunately due to some mistake I connected reverse voltage on one of the integrated USB3.0 ports. Result: The port is dead. However the 2nd port still worked for a while but I got some wired output in dmesg from time to time &#8220;Overvoltage detected&#8221; &#8211; even when nothing was connected to the port at all.<\/p>\n<p>I searched the internet many times but nobody got a real solution for this problem (other than replacing the complete logic port).<\/p>\n<p>So I decided to investigate and research the problem. It turns out the USB power is handled by a simple &#8220;load switch&#8221; (will prevent any damage in case to much power is drawn or in case of a shortage) from Texas Instruments (TI TPS 2561). This IC also can be found in many other MacBook models.<\/p>\n<p>So I ordered a replacement for 3 $ and changed the IC on the logic board:<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-4411\" src=\"https:\/\/www.stohn.de\/3d\/wp-content\/uploads\/2016\/04\/A1278-USB-REPAIR-988x1024.jpg\" alt=\"A1278-USB-REPAIR\" width=\"988\" height=\"1024\" srcset=\"https:\/\/www.stohn.de\/3d\/wp-content\/uploads\/2016\/04\/A1278-USB-REPAIR-988x1024.jpg 988w, https:\/\/www.stohn.de\/3d\/wp-content\/uploads\/2016\/04\/A1278-USB-REPAIR-290x300.jpg 290w, https:\/\/www.stohn.de\/3d\/wp-content\/uploads\/2016\/04\/A1278-USB-REPAIR-768x796.jpg 768w, https:\/\/www.stohn.de\/3d\/wp-content\/uploads\/2016\/04\/A1278-USB-REPAIR-988x1024-200x207.jpg 200w\" sizes=\"auto, (max-width: 988px) 100vw, 988px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Both USB ports are working again \ud83d\ude42 \ud83d\ude42 \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Since Apple decided not to manufacture a new usable MacBook Pro (Minimum: Core i7, 16GB RAM, 2 TB SSD) I have to continue to use my old MacBook Pro 13&#8243; from 2012 (Core i7, 16GB RAM, 2x 1TB SSD). Unfortunately due to some mistake I connected reverse voltage on one of the integrated USB3.0 ports. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4411,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"builder_content":"","_links":{"self":[{"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/posts\/4410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/comments?post=4410"}],"version-history":[{"count":1,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/posts\/4410\/revisions"}],"predecessor-version":[{"id":4412,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/posts\/4410\/revisions\/4412"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/media\/4411"}],"wp:attachment":[{"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/media?parent=4410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/categories?post=4410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stohn.de\/3d\/index.php\/wp-json\/wp\/v2\/tags?post=4410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}