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Kindle 4 Motherboard Replacement

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Kindle 4 Motherboard Replacement

Introdução

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My Kindle 4 had a motherboard issue and did not start even after I changed the battery. Fortunately, I found a second Kindle 4 with screen damage to salvage a working motherboard and change it.

Although removing a damaged screen from a Kindle 4 is pretty difficult, changing the motherboard proves much easier. Every single part of the device is glued, but the glue is sensitive to heat and will not be such a bother.

O que você precisa

Ferramentas

    1. Kindle 4 Motherboard Replacement, Open front and back covers: passo 1, imagem 1 %32 Kindle 4 Motherboard Replacement, Open front and back covers: passo 1, imagem 2 %32 Kindle 4 Motherboard Replacement, Open front and back covers: passo 1, imagem 3 %32
      • Follow the Screen Replacement tutorial up to Step 4

      • Open the back cover

      • Remove the front cover

      • Disconnect the battery

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    2. Kindle 4 Motherboard Replacement, Disconnect cables: passo 2, imagem 1 %32
      • Disconnect all flex cables from the board

      • There are 4 connectors to unclip:

      • Right buttons

      • Left buttons

      • Screen

      • Battery

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    3. Kindle 4 Motherboard Replacement, Unscrew the board from the back: passo 3, imagem 1 %32
      • Unscrew the board from the back

      • 3 Torx screws on this side

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    4. Kindle 4 Motherboard Replacement, Unscrew plastic casing: passo 4, imagem 1 %32
      • Unscrew the plastic casing from the front

      • 2 screws

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    5. Kindle 4 Motherboard Replacement, Pop the plastic casing off: passo 5, imagem 1 %32 Kindle 4 Motherboard Replacement, Pop the plastic casing off: passo 5, imagem 2 %32
      • Heat the plastic piece to help unglue it

      • Turn the device and push the piece out through the casing

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    6. Kindle 4 Motherboard Replacement, Unscrew board from the front: passo 6, imagem 1 %32
      • Unscrew board from the front side

      • That’s another set of 2 screws !

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    7. Kindle 4 Motherboard Replacement, Remove the board: passo 7, imagem 1 %32 Kindle 4 Motherboard Replacement, Remove the board: passo 7, imagem 2 %32 Kindle 4 Motherboard Replacement, Remove the board: passo 7, imagem 3 %32
      • The board has no more screws left, but it is still glued to the casing

      • Use some more heat to weaken the glue

      • Lever the board to unglue

      • Then, remove it by sliding it out

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    8. Kindle 4 Motherboard Replacement, Taking a peek at the board: passo 8, imagem 1 %32 Kindle 4 Motherboard Replacement, Taking a peek at the board: passo 8, imagem 2 %32
      • Here is what it looks like with EMC shields removed

      • Don’t try to remove the shields on your new board, they are directly soldered, and you risk damaging the whole PCB.

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    9. Kindle 4 Motherboard Replacement, Change the board and test: passo 9, imagem 1 %32
      • If you have another device from which you extract the new motherboard, run steps 1 to 7 again

      • Place the new motherboard

      • Before closing it back, test the device

      • Replug all connectors, connect the battery last

      • The LED should blink green upon battery reconnexion

      • Try turning the device on

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    10. Kindle 4 Motherboard Replacement, Reassemble: passo 10, imagem 1 %32
      • Unplug the battery again

      • Rescrew the board

      • Replug the battery

      • Reassemble the plastic piece holding the buttons, the front cover, and the back cover

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Conclusão

Amazon apparently discontinued service for this model: the service will expect double authentication, which apparently is not implemented in the Kindle firmware.

However, you can still use your Kindle 4 with USB : it is recognized as mass storage, and you can load ebooks in PDF or MOBI format in memory.

Check out the open-source software Caliber to convert your files in a vintage Kindle-friendly format.

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Eve Redero

Membro desde: 02/28/22

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благодарю за подсказки, спасибо!

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