MacBook Pro a1297 - 820-2610-A Green Light OK - NO POWER
Hi everyone.. i m new in MAC WORLD.
Usually i repair iPhone MotherBoard. I m learning schematic and some theory about MAC.
My question is :
I have a Macbook Buy from Ebay just for practice.
Green light is ok but no power.
I started to check from j6900 Initial Voltage fuse are ok.
pin 6 PPVIN_G3H_P3V42G3H AND Pin 4 P3V42G3H_SW - Voltages are ok.
On pin 1 ( FB ) i have a,26 Volt. ( cuold anybody explain what FB mean plz?
On pin 3 P3V42G3H_BOOST - I have 6,8 Volt.
I changed u6900 but voltage are same.
I checked also u7000 - CHGR_ACOK (pin 14) have 2,68 Volt.
Ma scope is understand in this case, which are the first rail to test ??
Usually i see in many vidoes and see CHGR_ACOK have 3,something volt… is 2,69 are very low in this case?
Thanks everybody for attention.