Then you need to test voltages at the connectors (digitizer connector and LCD connector), you need to examine a few power rails, and finally you need to press down on the CPU and see if something changes.
My guess is it's the LCD itself, so step 1. But I've seen other instances where a board level failure would cause image distortions.
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[guide|36020|This guide shows you how to remove the screen]. It's a difficult task for the untrained DIYer and it carries a high risk of damaging both the outer glass and the inside LCD, as well as the Touch ID cable (home button cable). If you decide to do it, take it slow and be gentle and patient every step of the way.
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[guide|36020|This guide shows you how to remove the screen]. It's a difficult task for the untrained DIYer and it carries a high risk of damaging both the outer glass and the inside LCD, as well as the Touch ID cable (home button cable) when the model has it (Mini 3 and up). If you decide to do it, take it slow and be gentle and patient every step of the way.
Then you need to test voltages at the connectors (digitizer connector and LCD connector), you need to examine a few power rails, and finally you need to press down on the CPU and see if something changes.
My guess is it's the LCD itself, so step 1. But I've seen other instances where a board level failure would cause image distortions.
-
[guide|36020|This guide shows you how to remove the screen]. It's a difficult task for the untrained DIYer and it carries a high risk of damaging both the outer glass and the inside LCD, as well as the Touch ID cable (home button cable).
+
[guide|36020|This guide shows you how to remove the screen]. It's a difficult task for the untrained DIYer and it carries a high risk of damaging both the outer glass and the inside LCD, as well as the Touch ID cable (home button cable). If you decide to do it, take it slow and be gentle and patient every step of the way.
There isn't in my opinion a straight answer.
First, you need to try a new screen.
Then you need to examine the connector.
Then you need to test voltages at the connectors (digitizer connector and LCD connector), you need to examine a few power rails, and finally you need to press down on the CPU and see if something changes.
My guess is it's the LCD itself, so step 1. But I've seen other instances where a board level failure would cause image distortions.
[guide|36020|This guide shows you how to remove the screen]. It's a difficult task for the untrained DIYer and it carries a high risk of damaging both the outer glass and the inside LCD, as well as the Touch ID cable (home button cable).