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Macbook 820-3662-A PP5V_S4 Missing. Green/orange light no power
Hi guys, working on 820-3662A logic board. Green orange light is on when charger plugged in but no power. PP5V_S4 missing. Checked P5VS4_EN and its missing. It comes from u8170 S4_PWR_en where pin 2- PM_SLP_S5_L is 0V. A little bit strange as P5VS4_EN= 0.07V but S4 PWR EN= 0V. Where does the...- Laimis
- Thread
- Replies: 15
- Forum: Macbook Logic Board Repair Questions
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macbook 820-2849 PP5V_S0 shorted
Hi need some advice, board 820-2849 PP5V_S0 acting strange. need to find out where its shorted to ground. If i take RC215 off then pin 2 shows beautiful 5.02V and pin 1=2.27v , what i dont understand where does it take 2.27v when rc215 is off as UC240 is no stuff. As soon as i put it on 5V...- Laimis
- Thread
- Replies: 11
- Forum: Macbook Logic Board Repair Questions
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macbook 820-2849-A problem no video black screen no backlight
Hi everyone, working on this 820-2849 board. Its been driving me mad for the long time and i cant figure it out so decided to ask you guys some help. its been a pain and i know that it might be a dead video but i believe i can still fix it. Right so the problem is that macbooks starts as it...- Laimis
- Thread
- Replies: 20
- Forum: Macbook Logic Board Repair Questions