危険
潜在的な危険
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危険

はじめに

Removing smoke, shadow, dust behing the LCD panel of 20, 21.5, 24 and 27-inch non-unibody aluminium iMac.

  1. Disassemble iMac LCD panel according to existing guide iMac Intel Repair
  2. Face the LCD down (be sure to have nothing between the screen and the table) ;
    • Face the LCD down (be sure to have nothing between the screen and the table) ;

    • Remove 4 screws from the left bracket then 4 screws from the right bracket as displayed (the smallest is at the bottom) ;

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  4. Use a "Putty Knife" to separate brackets from the LCD panel frame as shown ; Use a "Post-It" to keep the adhesive from the frame ; Continue gently between the bracket and the frame ;
    • Use a "Putty Knife" to separate brackets from the LCD panel frame as shown ;

    • Use a "Post-It" to keep the adhesive from the frame ;

    • Continue gently between the bracket and the frame ;

  5. Using the "Putty Knife" make a groove in the shield around the whole frame ; Once done from the bottom center to the edges of the LCD panel unclip the frame (don't touch the top). Clips are located at :
    • Using the "Putty Knife" make a groove in the shield around the whole frame ;

    • Once done from the bottom center to the edges of the LCD panel unclip the frame (don't touch the top). Clips are located at :

      • Bottom left, center, right ;

      • Left bottom, top ;

      • Right bottom, top ;

    • Lift the frame 90° maximum ;

  6. Using gloves and a suction cup gently lift the LCD sheet (no more than 90° failing to do so may bend the LCD and cause image displaying issues); Meticulously clean the inside. Do not use any detergent at most a very lightly humidified microfiber / lint-free cloth ; Do not use an air spray as those might leave marks. Best to get rid of dust is a simple hair dryer going from the top center to the edges ;
    • Using gloves and a suction cup gently lift the LCD sheet (no more than 90° failing to do so may bend the LCD and cause image displaying issues);

    • Meticulously clean the inside. Do not use any detergent at most a very lightly humidified microfiber / lint-free cloth ;

    • Do not use an air spray as those might leave marks. Best to get rid of dust is a simple hair dryer going from the top center to the edges ;

    • Reassembly is going back those steps making sure to get rid of your finger-prints ;

まとめ

To reassemble your device, follow these instructions in reverse order.

16 の人々がこのガイドを完成させました。

LLange

メンバー登録日: 2013年11月25日

856 ポイント

1ガイドが承認済み

Thank you for this guide! Helped me very much. And now my iMac is clean again :)

Robert - 返信

I got the screen cleaned and all was well but when I returned everything back to the iMac the lower part of my screen didn't work...

Chris Malka - 返信

If the backligt is ok but no image check connections :

— To the logic board ;

— Then underneath the protective cover on the top of step 2 image…

If the backlight is not ok check the connector and the cable at the lower right corner of step 2 image.

Beware that if you have bended the LCD you might have damaged it.

LLange -

It sounds like the LCD got bent then because the connections are fine so I just ordered a new LCD. But the guide was definitely helpful, I got the dust out!

Chris Malka -

Sorry about this I'm adding a warning on Step 5 to lift gently and no more than 90° hoping this might prevent others to have the same issue.

P.S. the LCD has an electronic board some times people have flickering issues after the display warmed-up. Thus changing that "inner-board" might solve their issue ⇒ after you receive your new LCD, try to sell the old display "inner-board" as well as the connectors…

LLange -

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