820-01521 image crackle on external

[iClub]

Good afternoon, this Mac suffered oxidation in region 7655, 8FHXTW and conector FPC LCD, where components were missing, I performed the replacement, in tests the Mac takes a while to present image, and after a while the image is distorted, cracked.

PPBUS 12.65V

 

[iClub]

 

[2informaticos]

Do you mean corrosion around Q7065?
Does it charge and works with battery alone?

Internal LCD image is good, only has external video problems?

 

[iClub]

Do you mean corrosion around Q7065?

yes.

It turns on only when the battery is connected.

The display does not show an image, as it has been shorted on the LCD connector, PDM_DMIC_DATA0_ISOL, PDM_DMIC_CLK0 and SMC_LID_LEFT.

 

[2informaticos]

Pretty hopeless project.
Damaged LCD connector by liquid is almost sure bad CPU.
iGPU eDP outputs directly connected to J8500.