Hello there !
I have a 3437-B from a MBA 2013. At the beginning I had no light on charger and no fan spin, no more historic. I found corrosion on PP3V42_G3H supply, I replaced the bad components and still no light on charger. I tried reflow SMC without success, and I finally had a light on charger after replacing the SMC with a working one. Now I have light on charger but still no fan spin. I finally found out something that PP3V3_S5 is present on the board but it's shorted...
I don't know if it's shorted since the beginning but I tried to remove the SMC, also U7501 and every component attach to PP3V3_S5 and I still have the short. I also looked for broken traces and bad resistances value, found nothing. I finally throw it in the ultrasonic cleaner but still shorted.
It's a dead board to me but if you have any advice I would be glad to hear it Thanks
I have a 3437-B from a MBA 2013. At the beginning I had no light on charger and no fan spin, no more historic. I found corrosion on PP3V42_G3H supply, I replaced the bad components and still no light on charger. I tried reflow SMC without success, and I finally had a light on charger after replacing the SMC with a working one. Now I have light on charger but still no fan spin. I finally found out something that PP3V3_S5 is present on the board but it's shorted...
I don't know if it's shorted since the beginning but I tried to remove the SMC, also U7501 and every component attach to PP3V3_S5 and I still have the short. I also looked for broken traces and bad resistances value, found nothing. I finally throw it in the ultrasonic cleaner but still shorted.
It's a dead board to me but if you have any advice I would be glad to hear it Thanks