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Checked and no external video. Sorry I didn't see that we were on the second page?

Negative for external video.

Dear friend Magsafe 85W received. The keyboard reacted. The MacBook starts up. I have the startup dong. No video or LCD + keyboard backlight. Reset PRAM done. I did a BGA reballing again, N13-GT-W-A2, still no video. Serious progress but I don't know what to control for the video?

I ordered an 85W. I will have it tomorrow Tuesday. What is S5 please?

I replaced Q5040 and R5041. No changes. I recapitulate. The fans start when the battery is connected and when I connect the MagSafe (60W)? The fans are running well except that they slow down a little bit, a fraction of a second, and start up again and again without booting. I can't turn off the...

L7330 = 0 L7220 = 0 L7260 = 3.34 L3895 = 0 L7770 = 0 L7030 = 12.60 L9830 = 0 L8360 = 0 L8310 = 0 L7720 = 0 L7630 = 0 L7100 = 0 L8930 = 0 L8960 = 0 L7560 = 0 L7550 = 0 L7510 = 0 L7520 = 0 L7530 = 0 Reballing on U8000. I did 16 reballing on 820-3332-B and all the logic boards worked again. The...

Thank you for your help but I do not understand your request, I am not a super specialist. All resistors, R2683, R2687, R2671, R2681, R2689 are good.

Thank 2informaticos U8900 (ISL62882C) replaced. Always the breakdown. An other idea ?

Dear friends First, congratulations to Louis and his entire team. Second, sorry, I don't speak English I use Google translation. My problem. Logic board A1502 Retina 820-3332-A MagSafe light green / orange, ok. The fans rotate at normal speed then slow down slightly then rotate normally, etc...