From what you have written I concluded that your display is broken and you need to replace it, here is some help: Samsung Galaxy J7 Display / LCD Replacement
Something bad happend to the display, maybe the flex has been broken, you need to replace the whole set, here is how to do it: Samsung Galaxy J7 Display / LCD Replacement
What exactly would you like to fix?
Thanks for the suggestion I will do my best!
The best way is to get it from the other motherboard.
I’m glad you find it useful, keep it up. Cheers!
Yeah you’re right that’s the solution for the error.
If you don’t understand something write it in the comments, cheers mate!
Please translate your comment to english, thanks :-)
You need to get it from the another motherboard.
It is called the reflow, you need to restore the proper connection between the chip and the motherboard.
At this moment I haven’t got solution, soon I will post it on my account, stay tuned, best regards!
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