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J2019 Diode Mode Values OK but Black Screen

Iphone 6 PCB 820-3846A

J2019 Connector on PP5V7 LCD AVDDN CONN was 0L.

Changed U1501 and U1503 ow Diode value Reading is OK but still screen Black

Changed FPC Too just in case , same thing

Can any one help me in this case ?

Thanks in Advance

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게시일: 2020년 1월 30일

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Do you mean PN5V7_SAGE_AVDDN or PP5V7_LCM_AVDDH; the rail you mention does not exist. It’s quite common for the PN5V7_SAGE_AVDDN to read OL so if that’s the case, I wouldn’t worry about it.

Did you check all of the connector pins or just some of them? When dealing with a dark/black screen, you need to insure everything reads okay and when possible, measure the actual voltages as well. You can get the QIANLI iBridge Test Cable to help you troubleshoot these kinds of issues.

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iPhone 6

J2019 Diode Mode Values OK but Black Screen

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