{"id":12848,"date":"2021-06-17T01:25:00","date_gmt":"2021-06-16T17:25:00","guid":{"rendered":"https:\/\/rewa.tech\/2-2\/"},"modified":"2024-05-10T15:29:13","modified_gmt":"2024-05-10T07:29:13","slug":"2-2","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/2-2\/","title":{"rendered":"Probl\u00e8me d'\u00e9cran trop sombre sur l'iPhone 7 Plus"},"content":{"rendered":"

Ph\u00e9nom\u00e8ne de dysfonctionnement<\/span><\/b><\/p>\n

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En ce qui concerne le probl\u00e8me d'\u00e9cran sombre sur l'iPhone 7 Plus, le c\u00f4t\u00e9 gauche de l'\u00e9cran \u00e9tait sombre lorsque nous allumions le t\u00e9l\u00e9phone. Toutes les autres fonctions fonctionnaient correctement.<\/span><\/p>\n

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\"Probl\u00e8me<\/span><\/p>\n

<\/span><\/p>\n

D\u00e9pannage<\/span><\/b><\/p>\n

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D'apr\u00e8s les sympt\u00f4mes du dysfonctionnement, il s'agissait d'un probl\u00e8me de r\u00e9tro\u00e9clairage.<\/span><\/p>\n

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Tout d'abord, nous avons remplac\u00e9 un autre \u00e9cran pour effectuer un test : le ph\u00e9nom\u00e8ne s'est reproduit. Nous avons ensuite v\u00e9rifi\u00e9 les circuits de r\u00e9tro\u00e9clairage en mesurant la r\u00e9sistance des diodes sur les broches concern\u00e9es du connecteur d'\u00e9cran J4502 ; toutes les r\u00e9sistances des diodes sur ces broches \u00e9taient normales.<\/span><\/p>\n

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\"\"<\/span><\/p>\n

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Nous avons continu\u00e9 \u00e0 v\u00e9rifier les valeurs des diodes sur les petits composants situ\u00e9s autour du circuit int\u00e9gr\u00e9 de r\u00e9tro\u00e9clairage ; l'iPhone 7 Plus comporte deux circuits int\u00e9gr\u00e9s de r\u00e9tro\u00e9clairage : le U3701 et le U4601.<\/span><\/p>\n

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En particulier, les valeurs des deux diodes D3702 et D4602 : la valeur normale devrait \u00eatre d'environ 200. Apr\u00e8s mesure, les valeurs des diodes se sont r\u00e9v\u00e9l\u00e9es normales.<\/span><\/p>\n

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 <\/span>\"\" \"\"<\/p>\n

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Nous avons ensuite v\u00e9rifi\u00e9 la connexion du M2800 en effectuant une mesure sur le c\u00f4t\u00e9 A du D3702 et sur le plot 1 du C3718 ; le r\u00e9sultat \u00e9tait \u00ab OL \u00bb, ce qui signifie que le M2800 \u00e9tait d\u00e9fectueux. <\/span><\/p>\n

\"\" \"\"<\/span><\/p>\n

Apr\u00e8s avoir remplac\u00e9 le M2800 par un neuf, la zone sombre a disparu et le probl\u00e8me a \u00e9t\u00e9 r\u00e9solu. <\/span><\/p>\n

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\"Probl\u00e8me<\/span><\/p>\n

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T<\/span><\/span>ips : Le <\/span>combiner<\/span><\/span>d<\/span><\/span> L'inductance risque de se casser si la temp\u00e9rature est trop \u00e9lev\u00e9e ; il faut donc contr\u00f4ler la dur\u00e9e de chauffage et la temp\u00e9rature du pistolet \u00e0 air chaud, ou bien utiliser une p\u00e2te \u00e0 souder \u00e0 basse temp\u00e9rature lors de son remplacement. <\/span><\/p>\n

<\/span><\/p>\n

\n<\/a>Cours de r\u00e9paration de la carte m\u00e8re de l'iPhone 7<\/span><\/u><\/a><\/p>\n

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\n<\/h2>\n

<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Malfunction Phenomenon For the iPhone 7 Plus dim screen issue, it’s the left side of the screen was dim when we turned on the phone. All other functions worked well. Trouble Shooting According to the malfunction phenomenon, this was a backlight issue. First, we can change another screen to test, the phenomenon was the same, […]<\/p>\n","protected":false},"author":10,"featured_media":12849,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wpai_generated_summary":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[780],"tags":[],"class_list":["post-12848","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\/12848","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=12848"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/12848\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media\/12849"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media?parent=12848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/categories?post=12848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/tags?post=12848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}