820-4924-a not detecting SSD USB, keyboard etc.

[BCN_Techs]

Hi.

Got this board. It doesnt detect SSD, after 3-4 minutes get question folder. Also tried to boot from USB and it doesnt detect it too, there is usb activity ( mous light turn on when plug). Also macbook doesnt allow me to make PRAM reset, i think keyboard is not detected too ( only let me make smc reset), when start with option pressed and no ssd but macos usb, it also doesnt detect the key.

There is no water damage. Just stop working. What can it be?

Visually logic board seems be ok.


thanks

 

[2informaticos]

Check if USB keyboard is detected.
If yes, try to start in boot menu.
Also try PRAM reset if possible.
Did you try both USB ports?
Try MLB alone, without RIO flex connected.
Did you try known good trackpad flex/board?

 

[BCN_Techs]

USB keyboard is not detected, mouse doesnt move cursor. just light under mouse.

No way to start in boot meny because keyboard is not detected.

Tried both USB. and also tried logic board only and same things happen. Flex also had been changed.

In last start i pressed D and it stated in diagnostic menu when machine asks to connect to internet but mouse not workin. Keyboard CAPS button work and give green light but i must press it for few second and wait about 20 so light turn on and same to turn it off.


May it be something wrong with clock or something like that because now seems that machine works but its extremely slow in everything.

 

[BCN_Techs]

INCREDIBLE.

SOLVED RESSETING PRAM:


As i noticed that keyboard working but very slow i just started and pressed pram reset buttons for about 3 minutes. Now machine working fine.


Thanks.