I found a backlight problem, look at the screen of the A1278 model 2012, the motherboard is 820-3115-B and notice that if there was a background image without light, I always find these problems sometimes cause me a lot of problem, but today I have solved it with simple measurements that I want to share, the first thing to check is that the Diode D9701 It will work normally with a high voltage that must be close to 25v well here I found 20v, with that I assumed that the PPVOUT_SW_LCDBKLT line was correct, now I went to IC U9701 and I asked myself a question, what is the reason that the circuit...

Re: Boardview and schematics for 820-00239-A Macbook pro touchbar?

thanks Man

Re: HP Compaq CQ57, CQ43 schematic needed



Gracias bro,...