If you have a backlight but no video I would suggest checking the pins on the LVDS connection. Possible LVDS replacement will solve this issue. It’s actually common for me to see this issue in A1502.
Also have you plugged up the hdmi connection. To an external monitor to verify your GPU is working? Always trouble shoot with these steps before resorting to soldering.
I already tested another display and it didn't work.
I will test external monitor on HDMI.
Customer did not report contamination with liquid.
Mac with marks that took mechanical shock, fall ..
Resolved
I did the Reset PRAM and the video came.
I will send the quote to the client.
Computer already functioning ... if the customer does not accept ...
Thank you very much to everyone who collaborated.
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