Overheating NAND in iPhone 7

Question

iPhone 7

2016년 9월 16일 출시. Model 1660, 1778. GSM 또는 CDMA / 32, 128 또는 256 GB / 로즈 골드, 금색, 은색, 검정색, 칠흑색으로 제공됩니다.

2264 질문 전체 보기

Sarah Wreisner @insquirrel

평판: 89

5

3

1

게시일: 2020년 11월 12일

옵션

Overheating NAND in iPhone 7

I have an iPhone 7 which came to me looking like it was thrown against a brick wall but the board looked good. Power is coming in fine, but amperage is constantly rising to 480 milliamps and dropping, over and over. With freeze spray, I found that it's heating REALLY rapidly under the CPU where pins c65/c66/d66 are (pp1v8_sdram and pp1v1_sdram). Can someone throw me a bone? I've checked for shorts at every point that these pins are related to. Can someone help me get on track?

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

예 아니요

점수 1

댓글 달기

답변 2개

선택된 답변

Chris Stables @imicrosoldering

평판: 50.7k

8

14

101

게시일: 2020년 11월 12일

옵션

You need to determine if it is a power issue or a data issue. A close visual exam is also extremely important. You said it looked like it had been thrown against a wall.

· The .48A is coming from your DCPS and not an amp meter?

· Check all NAND power rails are producing the correct voltage.

· Check all coils around CPU for cracks as this happens on the 7 series.

· Try putting it in DFU mode.

· Put some pressure on the CPU and prompt to boot.

These can turn into time consuming repairs but as I said you first need to determine if it is a data problem or power problem.

해당 답변은 도움이 되었습니까?

예 아니요

점수 2

댓글 달기