Hi when i press power button / short pads on motherboard nothing else happens than power light ( front of macbook not battery light which is on charger ) very slowly blinks.. 1-1-1-1- and continously. it takes about 3sec per blink cause its so sluggish. Checked magsafe board voltages.. getting 16.85v in magsafe.
smc reset / bypass wont work. cant do pram reset obviously. tried without battery and with 100% loaded battery. didnt even start trying different rams cause fan isnt running or getting voltage
when i measure ground from magsafe board and volts from battery pins in motherboard i get:
Pin1: 12.5v
pin2:12.5
pin3:12.5
pin4: 3.3-3.4 ( moving up and down)
pin5: 0v
pin6: 3.3-3.4 ( same thing up and down)
pin789 : 0v
Does it matter if i measure voltages after pressing power button or just connected to ac adapter? voltage gets to same places anyway even without ?
I checked PPVCORE_S0_CPU rail on "G3H" RAILS:
PP3V42_G3H: 3.4v ( good)
PP18V5_G3H: 16.85 ( this one should be 18.5v ) but dont know why its so low.. i have 60w charger and its right model with T-TIP
PPBUS_G3H: 12.6v (good)
PPBUS_G3H_CPU_ISNS: 12.6v (good)
and i get this reading also on few other rails ( S5 Rails ):
PP1V1R1V05_S5 : 1.05v which is correct
PP3V3_S5: 3.2v near correct
Every other rail is 0 volts!
All S0,S0M" RAILs are 0 volts, same with ENET rails / S3 rails. Also firewire rail is 0v
There is some copper showing from tracers near GPU when it was heated / reballed since epoxy glue had to be removed. only on those spots few mm near it. will look into those more closely when i get magnifying glass and some tracer pen. I guess if there is cracked tracer somewhere near gpu it only show as faulty gpu with black screen but since im not getting even voltage to fan someting else is clearly going on.
Any tips what i could test next? Or ideas already what could be wrong?
thanks alot in advance!
smc reset / bypass wont work. cant do pram reset obviously. tried without battery and with 100% loaded battery. didnt even start trying different rams cause fan isnt running or getting voltage
when i measure ground from magsafe board and volts from battery pins in motherboard i get:
Pin1: 12.5v
pin2:12.5
pin3:12.5
pin4: 3.3-3.4 ( moving up and down)
pin5: 0v
pin6: 3.3-3.4 ( same thing up and down)
pin789 : 0v
Does it matter if i measure voltages after pressing power button or just connected to ac adapter? voltage gets to same places anyway even without ?
I checked PPVCORE_S0_CPU rail on "G3H" RAILS:
PP3V42_G3H: 3.4v ( good)
PP18V5_G3H: 16.85 ( this one should be 18.5v ) but dont know why its so low.. i have 60w charger and its right model with T-TIP
PPBUS_G3H: 12.6v (good)
PPBUS_G3H_CPU_ISNS: 12.6v (good)
and i get this reading also on few other rails ( S5 Rails ):
PP1V1R1V05_S5 : 1.05v which is correct
PP3V3_S5: 3.2v near correct
Every other rail is 0 volts!
All S0,S0M" RAILs are 0 volts, same with ENET rails / S3 rails. Also firewire rail is 0v
There is some copper showing from tracers near GPU when it was heated / reballed since epoxy glue had to be removed. only on those spots few mm near it. will look into those more closely when i get magnifying glass and some tracer pen. I guess if there is cracked tracer somewhere near gpu it only show as faulty gpu with black screen but since im not getting even voltage to fan someting else is clearly going on.
Any tips what i could test next? Or ideas already what could be wrong?
thanks alot in advance!