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Modelo A1312 / Mediados de 2011 / Procesador Core i5 de 2.7 & 3.1 GHz o Core i7 de 3.4 GHz

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LCD is dead after an SSD upgrade.

After installing an new SSD (which replaced my old hard drive) into my iMac I reconnected the screen and hit the power button. The screen did not turn on, but the computer did. since then I've formatted the SSD and installed mavericks and migrated my old files over. I've been using my TV as a temporary monitor through all this.

These are the things I've tried to get my screen running again:

I've replaced:

the LCD back-light cable

the LCD data cable

the LCD back-light sync

I reset the pram and smc

I shined a flashlight on the screen to see if the backlight wasn't working (this is after replacing the cable) - There was nothing on the screen.


The only thing that I see periodically on the screen is what I think to be an apple logo that flashes on startup.

Besides that the screen has been completely dead, no light, no pixels, nothing.

The iMac was lying on it's back with the glass off when I tried all these things.

I'm at my wits end, I have no idea what to do and why the LCD is not functioning. Please, if anyone has any clue why this is or what else I can try I would greatly appreciated the help. Thank you.

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Did you get this figured out? I am having a similar challenge with mine.

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Unfortunate I never did. I still have the computer though and would like to figure it out eventually.

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Since it displays on your TV fine, all I can tell you is check continuity on every ribbon cable.

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Comentarios: secure connections?

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Yes. i.e., if they are in fact securely connected, and not cut or torn. Inspect every inch closely for breeches and every end to insure a proper seating.

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And the take away is?

Thank you.

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Sadly, I gave up in the project and bought a new laptop years ago. When I first bought the iMac the case was a bit damaged, so I suspect it could have been any sort of problem with the screen assembly.

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Austin Calam estará eternamente agradecido.
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