Why do I keep blowing LCDs?

Question

iPhone 4S

iPhoneの5代目となるiPhone 4S。このデバイスの修理は比較的簡単で、スクリュードライバー、開口ツールと忍耐が必要です。GSM/CDMA / 16, 32, 64 GB / 白と黒

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Jeremiah Mosley @jeremiahmosley

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投稿日: 2013年8月9日

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Why do I keep blowing LCDs?

Phone mowed over with a lawnmower. the only thing salvageable was logic board and loudspeaker. replaced EVERYTHING else including midframe. I put new digi assembly in and it works great for a little while, then i pick it up to check it and the LCD has no pic, green in color, horizontal lines all the way down the screen, and LCD flashes. replaced digi assembly twice now. digi doing same thing on test phone. any idea what issue could be? is this phone fixable? when the phone works it works great, everything in the phone functions when it should. only after time does this happen

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and test phone... is this another iphone that is functional or the same barely-made-it phone...?

gtcoodyscoops さんによる2013年8月9日

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and test phone... is this another iphone that is functional or the same barely-made-it phone...? — gtcoodyscoops

gtcoodyscoops @gtcoodyscoops 評価: 503 5 2 · Answer 1 · 2013-08-09T11:20:10-07:00

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gtcoodyscoops @gtcoodyscoops

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投稿日: 2013年8月9日

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i think there could be damage at the connector or logic board... is the phone really hot when this happens...? Overheating can mess with the display also but that signals a logic board issue... personally dont think its the lcd if the display is good at different times... usually pixelized, blinking out lcd hints a loose connection because if the lcd was bad you would not be getting a clear display at one time and bad display at another point in time, when a part is defective the problem is consistent... i say either connector or one of the ic's on the logic board... especially if there is heating...

but dont get it twisted overheating can mean also the processor is working harder than usual... or the camera integration on the logic board is commonly known to cause some heating...

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The phone is not getting hot at all. it really does act completely normal when LCD works. The LCD does not pixelate at all as there is no picture at all. the screen is just pale green with horizontal lines and the screen flashes. looked at connector in the microscope and i do not see any damage. Is there a way to troubleshoot this?

Jeremiah Mosley さんによる2013年8月13日

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