Troubleshooting Kindle 3 Wi-Fi 'screen damaged'

[Supra James]

Originally Posted by tccsargent

Note that if you replace the screen of a K3 with 3G, you should save the old screen if your Kindle OS is less than 3.4. This is because the new screen may not contain the proper waveform, without which your graphics could end up washed out.

Can you elaborate on this, please? I have just replace my screen on the K3G and it's went well. Text looks great, however my screen saver looks messed up and washed out. I'm running software version 3.4. Is there something special I need to do?

I have the old screen available, but can't think what I'd do with it

[Edward_R]

Check post #10 on this https://www.mobileread.com/forums/sho...light=Waveform

[Supra James]

Originally Posted by Edward_R

Check post #10 on this https://www.mobileread.com/forums/sho...light=Waveform

Thanks, that gives me some good background information. Unfortunately it's hasn't helped very much. The method has two drawbacks - 1, it's temporary - when you reboot you lose it and have to open the kindle again and 2, you're basically using calibration data for the old screen to drive the new screen. I get additional ghosting in text especailly when accessing menus.

I would like to find a way of creating/obtaining the waveform file for my new screen somehow. I am not holding out much hope though.

[HarryT]

Originally Posted by Supra James

I would like to find a way of creating/obtaining the waveform file for my new screen somehow. I am not holding out much hope though.

I would replace "not much hope" with "no hope", if I were you.

[Supra James]

Originally Posted by HarryT

I would replace "not much hope" with "no hope", if I were you.

That's a great shame, am I basically out of luck then? Thought I was being clever getting a new screen but it hasn't really worked out

[Supra James]

I may have another explanation as to why the kindle can't read the EEPROM on my new screen - it hasn't bloody got one!

Compare my old screen:



With the new one:




So, missing chip (presumably EEPROM) and slightly different model number. Amazing that it works at all

Can anyone here with screen replacement experience recall if their new screen has a chip/eeprom on the ribbon cable?

[SampleAndy]

I've never replaced a screen with a NEW one, only with USED ones. I've had one success and one ... almost success, like what you've described. (see the pictures in my K3 Problems album)

Just for further information for the rest of us, where did you purchase the replacement screen?

Remember, it's not a complete failure. It's still a decent reader, it just doesn't show images worth a damn anymore.

[Supra James]

It was purchased from a seller in China on AliExpress

http://www.aliexpress.com/snapshot/273933156.html

I sent him a message and he's actually admitted that I have the wrong part as his listing does show the eeprom chip in the picture, and he's sending a correct replacement (hopefully!)

[dimasic]

Supra James, can you tell the EEPROM marking? What kind of chip is on the "good" screen ribbon cable? And is there a pads for the chip under the label on the "bad" one? Thank you.

[veroiatno]

I got mine from here and I didn't notice any problems yet.