820-00165-A 2017 Macbook Air, Backlight on but no image

Greg

New member
Hello it should be noted that I am noob,
This had liquid damage on the I/O board flex cable connector on logic board, first it would turn on no chyme with backlight on but no image.
Was unresponsive to NVRAM reset . it Performed SMC reset.
After using the Medusa 2 to clear PRAM and ME region it now turns on and chymes back light on but no image.
I have tested with known working screen.
Anyone had this before?
 

2informaticos

Administrator
Staff member
Do you get pure white screen, or just black with backlight?
Test the machine disconnecting LIO flex.
Be sure to use original Magsafe 2 (two) charger; not an adapter from previous Magsafe 1 model.
Did you test external video?
 

Greg

New member
Hi mate the screen stays black with backlight on.
Tested without LIO flex same outcome
Am using original mage safe 2
External video shows nothing.
Have also test with a usb drive it shows not reading any data. seems to be brain dead?
 

Greg

New member
Alright so I can copy a bios from a working board and flash with the medusa. Does it have to be the 2017 model or will 2015 work too?
 

Greg

New member
I flashed a known good bios from a 2017 model and cleaned the ME region still brain dead. Anything else I can do or is this a donor board now?
 

2informaticos

Administrator
Staff member
I hope you've cleaned ME region with Medusa.
If not available, try the BIOS file as is; just for test, to see if something change.
Swapping ME region with stock/generic one (even clean) is not the correct way.
 

Greg

New member
I copied a known good bios and flashed it onto the not working board and cleaned the ME region afterwards (With the Medusa) is this not the correct way?
 
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