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iMac Intel 27" EMC 2309 (Late 2009, Core 2 Duo 3.06 or 3.33 GHz) ID iMac10,1, EMC 2374 (Late 2009, Core i5 2.66 GHz or Core i7 2.8 GHz) ID iMac11,1

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The screen turns off

Hi,

I have a mid-2009 iMac 27 ". The problem is that the screen is turned off. what I have currently connected to an external monitor, which has no problems, I discard it video chip problem.

When I climb the brightness, it turns off. The iMac continues to work, because I work with external monitor.

What would be the problem and how I fix it?

Specs:

iMac 27 inch late 2009 core i5. 12 GB ram DDR3, Video ATI Raden HD 4850 512MB

Pics

Tº :http://subefotos.com/ver/?d7aa137f2c9f7d...

iMac + monitor: http://subefotos.com/ver/?a7964f9b1ab3c8...

Contestado! View the answer Yo también tengo este problema

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Solución Elegida

The power supply heat sink appears to be running hot. Given the fact the LCD temp is low, I suspect your issue is a bad power supply. In this case the backlight power feed. See if you can see the desktop using a flash light if you do then the backlight voltage needs to be checked.

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and flash light as the insert into the monitor ?

por

Aim the light from the flashlight into the front of the glass of the display. The light will act like the backlight. It is so you can see if the desktop image is present (faint image)

por

I put a lamp on the monitor (remove the projector) and you see something, super little. I uploaded a picture.

http://subefotos.com/ver/?2010f8177ad411...

por

That proves the issue is the backlight system in the display. If you hold the flashlight at an angle you should see more of the image.

por

What would be the solution ?, or, How do I fix ?.

por

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Alexis Troncoso estará eternamente agradecido.
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