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1.83 GHz Core Duo or 1.83, 2, or 2.16 GHz Core 2 Duo A1208 (EMC 2104/2110/2114/2124)

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Repairing LM171W02 screen (make from 2 one)

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I've got 2 identical iMac's here (1.83 Ghz Core Duo version), whit 2 defective screens. One has the typical vertical coloured lines (display failure not logicboard), the other one is 1rd black at the right side (the other 2rd is working fine) . Now I thought about fixing one of those 2 (the one whit the 1rd black should be easier), but i'm unable to find any schematics nor any fixing guide.

Does someone has any idea? If necessary I could make some pictures.

/edit: So here is a picture from the one that is 1 third black, or in this case 1/6 black and 1/6 white, this is changing each boot. As I said it's the screen not the logicboard. The division is exactly between the 4th and 5th ribbon from the circuit board of the screen to the screen front.

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@roman78 what do you mean by 1rd black at the right side? Post some images. Let's see what you got there.

da

Updated whit photo and more text.

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Sadly enough that looks like another bad LCD

da

Yes, I know. But if I know what part causes this I could replace it whit the one from the other display. The display itself (the front) should be OK, it's somewhere on the circuit board of the screen.

Or the other way round: The vertical lines are caused by bad multiplexors (as I read somewhere), it should be possible to replace those, whit a SMD solder iron.

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The most common problem with this series was bad capacitors. Open them up and examine the approximately 24 "cans" for swelling and/or leakage.

UPDATE 4/17/16

Here's how to replace the display: iMac Intel 17" Display Replacement

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I think those were the G5, mine is an Intel Core Duo. I all ready opened it. There are only 3 Caps inside, all looking normal. Also I noticed that those caps were all ready replaced, I noticed on the back.

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Roman78 sarà eternamente grato.
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