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I noticed the values changing between hot and cool board. I removed U7000 last night and checked it this morning.
I'll continue playing with this, but being an old board, I'll work on it when I have time.
My biggest issue is not being able to compare this to a working board.
My bad on the diode "v" (edited the above) . Just to clarify, for the above diode reading, board was not connected to power.
Could anything else be pulling down the voltage on PPBUS_G3H or is this most likely a bad SMC?
Thanks for the guidance. Much appreciated!
Replaced u7000 and now getting steady green light. 12.3V on PPBUS_G3H which seems a little low. Board not connected to battery.
diode mode(red probe on GND)
SMBUS_SMC_BSA_SCL = 5.2
SMBUS_SMC_BSA_SDA = 5.3
SMBUS_SMC_BSA_SDA = 3.4v
Looking at a 2009 macbook pro LB 820-2530.
No light on charger
u7000 pin resistance on:
17/18 => 20.7
pin 1 = 16.78v
pin 2 = 16.78v
pin 3 = 4.02v
pin 19 = 5v
pin 20 = 5v
pin 21,23,24 =0.7v
ping 25 = 4.5V
Need to replace U7000 as does not appear to be...