Why does the image on the PocketBook Basic 613 e-book turn pale and disappear after replacing the display?

Question

Electronic books

After the display of the e-book was broken, I ordered a new one from e-bay - ED060SC4 (LF), exactly the same as the one that was installed. Moreover, once I already made a replacement and the display worked perfectly. But this time, it is observed that after some number of page flips, the image becomes more and more faded and then part of it almost completely disappears (see images below).

This problem occurs not only when reading books, but also in the menu, but less often. Sometimes after the next update of the screen, the image returns to its original form.
In the settings there is a full screen refresh "always", but a similar effect is observed with other settings.
Tried to do a full reset, but it didn't help.
What could be the problem?
Thanks in advance.

Answer 1

On old books like 301, when rearranging the display, you had to play with wave-forms.
You may need to set the matrix control voltage somewhere, look at the-ebook.org forum. Such a small twist for a screwdriver inside the book.