mrjoeham
New member
MacBook Pro no image, no backlight 820-4924-A. The board barely had water damage on the corner where LCD connector was located from a water bottle in back pack. I cleaned the area up with flux and reflowed the bad looking solder joints. Connector J8300 pin 38,39,40,41 - Connector J4915 pin 4, U8300 and on the reverse side of board the only thing I saw that had corrosion was C7778, check for short here and none.. I cleaned it all up and reflow with new solder. It boots up and chimes and also with the external screen via with HDMI output I got image and can use the laptop. The LCD male connector on the display looks clean and solid. I took measurements at the board connector and only have 5.1v at pin 3 and 5.1v on pin 4 and all other pin is 0v. I check C8320- C8328 all is present ... I don't have extra display to test. I verified no image with flashlight on backside thru apple logo. Am I on the right track.