Hi all,
I picked up 2 Kobo Clara 2E and a Clara BW, all with broken screens. I have replaced them all, the 2 Clara 2E's with screens from AliExpress and the Clara BW with a screen from iFixit. I disconnected the battery first and reconnected it last for all 3.
One of the Clara 2E is fine. The other, and the Clara BW appear more or less fine, but lack contrast compared to the "good" 2E. If refreshed they are fine but gradually fade. Some of the words when reading are randomly not as black as the others. If left on the home or settings page for 30+ sec the background gradually turns light grey in a TV static/speckled type pattern, not uniform. The Sleeping screen is not as contrasty as it should be but the background remains clear. The Powered Off screen is not as black as it should be.
I have played with the alignment of the display ribbon cables, cleaned up the connectors with 99.9% IPA, made sure there is no remnant of conformal coating in the connector. On the BW I have amended the vcom setting to match the value on the ribbon cable (x1000). I am not able to adjust the 2E but the variance is not huge - and the "good" 2E works fine despite a similar variance.
I have applied the latest software updates and restarted multiple times.
Have I got 2 bad screens or is there something I am doing wrong?
