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Old 03-02-2021, 01:44 PM   #1
TomTW
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Kindle keyboard screen gone weird after screen replacement

Hello,
Can anyone tell me what is wrong with my kindle screen?
I dropped my kindle, the screen cracked, so I ordered a replacement and installed it at the weekend.
Since turning it on after the screen replacement I can only see my kindle menus in the top right of the screen. The bottom right is just grey and never changes and there is a bar on the left which was the display when I unboxed the replacement screen.
Has anyone come across this before?
Is the replacement screen the problem.
I tried to attach a photo to this post however I am not sure if that worked.
Many thanks in advance.
Tom
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Old 03-02-2021, 01:55 PM   #2
NiLuJe
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Cracked substrate and/or damaged/badly seated flex cable.

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Old 03-02-2021, 02:33 PM   #3
TomTW
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Quote:
Originally Posted by NiLuJe View Post
Cracked substrate or damaged/badly seated flex cable.
Hi There NiLuJe,
Thanks for your speedy response. I’m not very technical when it comes to the kindle so I’m don’t completely understand your answer.
So is the substrate a layer of the screen? So the replacement screen could be damaged?
And what does the flex cable connect to? Is that the cable that goes from the screen into the board?
Many thanks
Tom
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Old 03-02-2021, 03:23 PM   #4
JSWolf
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It's not the flex cable. It's the screen that's broken.
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Old 03-02-2021, 03:36 PM   #5
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Quote:
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It's not the flex cable. It's the screen that's broken.
Prove it.
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Old 03-02-2021, 04:20 PM   #6
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Quote:
Originally Posted by TomTW View Post
Hi There NiLuJe,
Thanks for your speedy response. I’m not very technical when it comes to the kindle so I’m don’t completely understand your answer.
So is the substrate a layer of the screen? So the replacement screen could be damaged?
And what does the flex cable connect to? Is that the cable that goes from the screen into the board?
Many thanks
Tom
That's the TFT substrate, which, yeah, is roughly one of the lowest layers of the screen, and happens to be a thin glass pane on most eInk screens.

And the flex cable I'm talking about is indeed the screen's ;o).
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