iMac LCD

[Nighties]

I have 2 iMacs here- Mid 2007 and Late 2008: the late 2008 model had while lines down it indicating to me it has a broken LCD? Is it possible to use to the LCD from the 2007 iMac and install it into the 2008 iMac?

Thanks

 

[bizzle]

There is no Late 2008 iMac. If you meant Early 2008, than yes, those are interchangeable.

 

[Nighties]

There is no Late 2008 iMac. If you meant Early 2008, than yes, those are interchangeable.

Yes I meant early 2008, my apologies

 

[Brian33]

Don't overlook the possibility that the problem may lie in the graphics card. I know a bit about the 24" Early 2008 iMac (I have one), and from my reading it seems that the graphics cards are the most frequent problem -- both the ATI Radeon 2600 HD and the Nvidia card (though my impression is that the latter fail more often and/or sooner). I've read about Gfx card problems that were described as "pinstripes," as well as other display anomalies.

What screen size is your 2008?

I have an image from the service manual for the 24" Early 2008 that shows the part numbers for the LCD panels and graphics cards; if that would be useful to you let me know. You might be able to find out the part numbers for the 2007. I would expect them to match if they are the exact same part.

 

[maflynn]

Is it possible to use to the LCD from the 2007 iMac and install it into the 2008 iMac?

That symptom can be indicative of a failing GPU and not display unit failing, and in fact, I'd suspect that over the LCD unit failing.

 

[Samuelsan2001]

Agreed the GPU is the more likely issue.

 

[Nighties]

Don't overlook the possibility that the problem may lie in the graphics card. I know a bit about the 24" Early 2008 iMac (I have one), and from my reading it seems that the graphics cards are the most frequent problem -- both the ATI Radeon 2600 HD and the Nvidia card (though my impression is that the latter fail more often and/or sooner). I've read about Gfx card problems that were described as "pinstripes," as well as other display anomalies.

What screen size is your 2008?

I have an image from the service manual for the 24" Early 2008 that shows the part numbers for the LCD panels and graphics cards; if that would be useful to you let me know. You might be able to find out the part numbers for the 2007. I would expect them to match if they are the exact same part.

Hi there, they are both 20 inch screens, please see image attached to have a look at what you guys think! Thanks heaps

 

[bizzle]

The glass distorted the image some but if you are talking about the dark faded lines going vertical than that's the display.

 

[Brian33]

Hi there, they are both 20 inch screens, please see image attached to have a look at what you guys think! Thanks heaps

So in this particular image, is it the wider dark/light alternating bands that go straight up and down, or the curving, narrower bands that seem to decrease in width?

I'm guessing from your original description and bizzie's post, you mean the straight up and down bands.

In any case, I'm afraid I can't tell whether the LCD screen or the graphics card is more likely to be the problem. I haven't encountered or read about any LCD failures, so I'm not sure how they would show up.

I guess you can try the 2007 --> 2008 LCD swap and find out that way! It would also be good to find out if the graphics card can be swapped too, but I don't know much about the 20" models...

 

[old-wiz]

Have you tried using an external display?