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Hi all, I have a Macbook pro 2017 with logic board 820-00840 that has no audio. No audio hardware detected. I don't get HDA_RST_L which should be 1.5 volts. This voltage came straight from CPU :) Any ideas how this voltage is produced? Apparently depends on PCH but they seems to be working...

Hi Jack, I already spend so much time on this board and the problem is related to bios. If i removed bios chip from a fully working A1708 (2017) and solder it on the board that don't see SSD (820-00840). It works absolutely fine and does see SSD. It need NVRAM reset and problably ME region...

anyone to help me out?

Hello, I flashed the bios but no display. flash back old bios work but not detect ssd.Any ideas?

Hey let me know if this programmer will do the job. I saw so many expensive of this RT809H. This one seems much affordable. click here

strange i programmer so many different bios with no issues. anyway will buy a new one. thanks

any ideas which model i can buy.

Hi all, I am having a strange issue. I am trying to reset efi password for a macbook pro 2012 board. Customer send me only the board :) I removed the bios chip and put on my programmer it's showing me M25P10A lol when on the chip it's written 25Q064 Board number is 820-3115-B See attached...

thank you. I need to get two new cd3215 then i will be able to test :)

yes yes

here the working bios i am using that doesn't detect ssd.

Hi, I will send when I get back home :)

Hi all, I am having issues with A1708. To be honest, it's not my favorite board at all. I have 3 logic board that will not see SSD. One of the board was working well and could see SSD. However, after i re-flashed the BIOS, It didn't want to switch on. So I flash the original backup i made...