iMac A1311 LCD exchange and decomposition method 11 steps

[iMac A1311 LCD replacement and decomposition method STEP 1]

It is an iMac with a line in the LIQUID CRYSTAL though it is in the middle of starting with the power.
Since the start-up started normally after that, there seems to be no problem with HDD and data.
In the case of poor display of the LCD panel, I think that it is a specific shortcut due to the investigation of the panel with the highest possibility of failure, but if there is a uniformly spaced line on the screen like this time, there is a high possibility of graphic failure.
If the symptoms still do not change after actually replacing the panel with a new one, we will investigate the cable and logic board in the same way.
Let's take a look at the iMac A1311 EMC 2389 LCD panel disassembly.

[iMac A1311 LCD replacement and decomposition method STEP 2]

Since the model of this iMac has a two-layer structure with the display part of the liquid crystal panel and the glass of the surface, first attach the suction cup to the upper end like an image in order to remove the glass of the surface.
Suction cup is a convenient item that can be removed efficiently by adsorbing it to glass that is difficult to hold and difficult to put force.
You can buy it at home center or on the web.

[iMac A1311 LCD replacement and decomposition method STEP 3]

By lightly pulling the adsorbed suction cup toward the front, you can float the glass with a strong magnet.
Remove the glass so that it will be lifted so that it is still attached to the body.
Removed glass will be used later, but do not touch the inner side as much as possible.
Please note that cleaning becomes difficult when fingerprints are attached!

[iMac A1311 LCD replacement and decomposition method STEP 4]

Remove four red-marked Torx screws that secure the LCD panel on the right side.
At this time, there is a strong magnet around the screw, and it is attracted and it is hard to remove, but let's remove it carefully over time.

[iMac A1311 LCD replacement and decomposition method STEP 5]

The left side will also remove all four Torx screws of the red mark part, but please manage so as not to lose it because the screw is increasing.

[iMac A1311 LCD replacement and decomposition method STEP 6]

Get the screws.

If you remove everything, you can float the top of the panel like an image.
However, if you are not familiar with the iMac panel has several very thin and delicate cables, It is better to grasp the position and length of the cable while floating the crystal panel and illuminating the light in the gap so that the cable and connector sares without damaging it.

[iMac A1311 LCD replacement and decomposition method STEP 7]

The cable is connected from the LCD to the base on the left side, so remove the red connector.

[iMac A1311 LCD replacement and decomposition method STEP 8]

The LCD and sensor cables are then connected to the logic board, so you can easily remove the sensor cable on the left, but raise the pin and pull it out carefully.

[iMac A1311 LCD replacement and decomposition method STEP 9]

The next cable is the last cable attached to the LCD panel, but remove the red connector.

[iMac A1311 LCD replacement and decomposition method STEP 10]

The red mark of the image is a sensor cable and a liquid crystal cable, so please refer to the structure and location.

[iMac A1311 LCD replacement and decomposition method STEP 11]

After all cables have been removed, the panel can be removed.
When replacing the panel, we will reassemble it by the reverse procedure, but the cable relation attached to the original liquid crystal will be reused, so please port it to the new panel side before incorporating it.
By the way, the cause of this failure was still a graphic failure, so I changed the graphic chip and came to reflect normally.