{"id":847,"date":"2016-06-03T04:37:36","date_gmt":"2016-06-03T04:37:36","guid":{"rendered":"http:\/\/www.xn--nrdoteket-l8a.dk\/?p=847"},"modified":"2017-06-07T13:33:27","modified_gmt":"2017-06-07T13:33:27","slug":"reparation-qnap-nas","status":"publish","type":"post","link":"https:\/\/noerdoteket.dk\/index.php\/2016\/06\/03\/reparation-qnap-nas\/","title":{"rendered":"G\u00f8r-Det-Selv: Diagnose og reparation af en QNAP NAS"},"content":{"rendered":"<blockquote><p>Bragt i\u00a0<a href=\"http:\/\/www.computerworld.dk\/art\/237530\/goer-det-selv-diagnose-og-reparation-af-en-qnap-nas\" target=\"_blank\" rel=\"noopener noreferrer\">Computerworld<\/a>\u00a0d. 5 juli 2016<\/p><\/blockquote>\n<p>Pludselig en dag holdt min elskede QNAP (TS-639 pro) NAS op med at virke. Jeg er kylling nok til at tage backup, s\u00e5 var der ikke direkte panikstemning, men lidt sved p\u00e5 panden var der nu, da en del data var tilf\u00f8jet siden sidste backup.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>&nbsp;<\/p>\n<p>Jeg er glad for min NAS, som <a href=\"http:\/\/www.n\u00f8rdoteket.dk\/index.php\/2016\/01\/07\/205\/\">tidligere beskrevet her<\/a>, s\u00e5 det vil v\u00e6re tiden v\u00e6rd at pr\u00f8ve om jeg kan\u00a0finde \u00e5rsagen til fejlen og reparere min NAS.<\/p>\n<p><!--more--><\/p>\n<p>Displayet p\u00e5 NAS&#8217;en skrev &#8220;System Booting&#8230;&#8221; og kom aldrig l\u00e6ngere. Det faktum at der trods alt blev skrevet noget i displayet gjorde at jeg i f\u00f8rste omgang troede at CPU&#8217;en (en Intel Atom)\u00a0bootede, og at der var tale om en firmware fejl. En n\u00e6rmere inspektion viste dog, at displayet drives af en lille PIC microcontroller, og at jeg dermed ikke kunne konkludere om selve CPU&#8217;en bootede eller ej.<\/p>\n<p>N\u00e6ste skridt er, at\u00a0kigge p\u00e5 om der kan v\u00e6re tale om en hardware fejl, og det f\u00f8rste man altid skal g\u00f8re n\u00e5r man fejls\u00f8ger p\u00e5 hardware er, at m\u00e5le om alle forsyningssp\u00e6ndingerne er til stede og indenfor specifikationerne. I denne video gennemg\u00e5r jeg diagnoseforl\u00f8bet, og konstaterer at det er str\u00f8mforsyningen som er synderen.<\/p>\n<p><iframe loading=\"lazy\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/Pqajw75Il68?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>Det er, som I kan se, en lidt subtil fejl, da 3,3V, 5V og 12V alle er til stede og tilsyneladende uden st\u00f8rre ripple eller andre problemer. Problemet er, at signalet PWR_OK fra str\u00f8mforsyningen indikerer at det modsatte er tilf\u00e6ldet.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>&nbsp;<\/p>\n<p>ATX standarden definerer at PWR_OK skal antage 5V efter at str\u00f8mforsyningen er t\u00e6ndt og forsyningssp\u00e6ndingerne er stabile. Jeg m\u00e5ler kun et par hundrede millivolt og dermed fastholdes CPU&#8217;en i RESET.<\/p>\n<p>I n\u00e6ste video skiller jeg str\u00f8mforsyningen ad, og konstaterer at den ganske rigtig er kaput. Der er adskillige komponenter som er helt forkullet &#8211; og det er alt sammen p\u00e5 det print som forest\u00e5r kontrolfunktionerne, s\u00e5 det svarer fint til symptomerne som m\u00e5lt.<\/p>\n<p><iframe loading=\"lazy\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/cbe8pvlAtT0?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>Desv\u00e6rre st\u00e5r\u00a0str\u00f8mforsyningen ikke til at redde &#8211; flere komponenter er br\u00e6ndt til ukendelighed, og n\u00e5r jeg ikke har diagram kr\u00e6ver det reverse engineering. Derved vil opgaven komme til at tage alt for lang tid. En ny str\u00f8mforsyning fra QNAP er selvf\u00f8lgelig en mulighed, men QNAP tager et alt for stort markup, s\u00e5 jeg kan spare n\u00e6sten 1000 kr ved at k\u00f8be en standard ATX str\u00f8mforsyning.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>&nbsp;<\/p>\n<p>Der er en konsekvens ved at spare penge: Stikkene p\u00e5 en standard ATX forsyning passer ikke over p\u00e5 min NAS, og derfor m\u00e5 loddekolben tages i brug. Organtransplatationen mellem den gamle og den nye str\u00f8mforsyning\u00a0viser jeg i sidste video, som slutter med en test af min reparation.<\/p>\n<p><iframe loading=\"lazy\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/98NN89tq4go?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>Hermed er patienten genoplivet og jeg kan forh\u00e5bentlig se frem til en del flere \u00e5rs trofast tjeneste.<\/p>\n<p>&nbsp;<\/p>\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-ad-rect -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"8706514482\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Bragt i\u00a0Computerworld\u00a0d. 5 juli 2016 Pludselig en dag holdt min elskede QNAP (TS-639 pro) NAS op med at virke. Jeg er kylling nok til at tage backup, s\u00e5 var der ikke direkte panikstemning, men lidt sved p\u00e5 panden var der nu, da en del data var tilf\u00f8jet siden sidste backup. &nbsp; Jeg er glad for &hellip; <a href=\"https:\/\/noerdoteket.dk\/index.php\/2016\/06\/03\/reparation-qnap-nas\/\" class=\"more-link\">L\u00e6s videre<span class=\"screen-reader-text\"> &#8220;G\u00f8r-Det-Selv: Diagnose og reparation af en QNAP NAS&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45,127,51,53],"tags":[],"class_list":["post-847","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diverse","category-goer-det-selv","category-nas","category-tipsticks"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>G\u00f8r-Det-Selv: Diagnose og reparation af en QNAP NAS - 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