arnonabuurs
New member
Hi, I have a mac air 11 inch with no obvious liquid spil but many probe points look discolored from corrosion. Smoke was coming out of Q7260 and U7201 was frying so I replace both. Now I have a green light on the charger, no orange. I do have orange when i connect a battery, not sure how these old ones work with regards to one wire circuit. Measure the following:
PPBUS_G3H 8.39
PP3V42_G3H 3.4v
PP3V3_S5 3.3v
PP5V_S5_LDO 5v
PP5V_S3 0v
U6100 looks very clean, gets 3.3v in.
U7201
Pin 21 P3V3S5_EN 3.48v
Pin 4 P5VS3_EN 0.204v
Pin 23 VIN 8.39v
pin 12 SMC_PM_G2_EN 3.39v
Pin 25 SW2 3.31
Pin 32 SW1 0v
Resistors on S3 Rail Enables measure OK. PM_SLP_S4_L = 0.204
Any suggestions please?
PPBUS_G3H 8.39
PP3V42_G3H 3.4v
PP3V3_S5 3.3v
PP5V_S5_LDO 5v
PP5V_S3 0v
U6100 looks very clean, gets 3.3v in.
U7201
Pin 21 P3V3S5_EN 3.48v
Pin 4 P5VS3_EN 0.204v
Pin 23 VIN 8.39v
pin 12 SMC_PM_G2_EN 3.39v
Pin 25 SW2 3.31
Pin 32 SW1 0v
Resistors on S3 Rail Enables measure OK. PM_SLP_S4_L = 0.204
Any suggestions please?