RSAG7.820.6526 EMMC POINTS.

electronics

Hi everyone
Today i share an experience of reading EMMC that was stubbborn to read.This is a Hisense 55k3110 .rsag7.820.6526 (Also covers LTDN40K321UWAU )

psyjamm

Hello ,I can't read this emmc on this board, everytime have "read timeout"
Read timeout.
010:  eMMC OCR: 0000
011:  eMMC CID:  000000000000000000000000000000
012:  eMMC CSD: 000000000000000000000000000000
What wrong?R81 was disconnected

electronics

psyjamm 2019-11-17 17:03
Hello ,I can't read this emmc on this board, everytime have "read timeout"
Read timeout.
010:  eMMC  ...

Yes R81 must be disconnected and also ground the main Crystal (In & Out). Note that the CLK (white wire) is now only in touch with the EMMC chip. Use original PSU. I have a 100% success rate read and write in all cases unless if the emmc chip is faulty.
Also try to change the Settings VCCQ Volt to 1.8v and VCC Adjust to 2.7v

electronics

psyjamm 2019-11-17 17:03
Hello ,I can't read this emmc on this board, everytime have "read timeout"
Read timeout.
010:  eMMC  ...

RSAG7.820.6526 EMMC . It is also worth checking peripheral components like resistors associated with the EMMC chip for open or too high values plus the points to ground resistance in case of internal chip short circuits.

electronics

psyjamm 2019-11-17 17:03
Hello ,I can't read this emmc on this board, everytime have "read timeout"
Read timeout.
010:  eMMC  ...

I find this EMMC very educative for anyone interested in this section. There is a lot of pointers that can help everyone. Search this link by Shirleyhuang:  http://www.ifix.net.cn/thread-94096-1-1.html

chief eagle

CAN YOU SHARE THE EMMC DUMPS FOR 49K3110PW  OR FOR THE K24C128 RSAG7.820.6526 PLEASE